(Solved) one sound application at a time

hello,archers! I moved from gnome to Kde(at last) and faced the issue. E.G if amarok plays musik there's no system notifications and smplayer plays no sound t.i only one programm can use alsa at a time. I have latest kde, alsa and gstreamer and xine backends for phonon. alsamixer shows everything's ok. What should I do? thnx.
Last edited by off220 (2011-01-15 10:30:01)

Ok. I've been able to solve the problem by creating /home/user/.asoundrc file with this content
pcm.softvolPhonon {
type softvol
slave.pcm "default:CARD=0"
control {
name "Phonon"
card 0
min_dB -51.0
max_dB 0.0
resolution 100
hint {
show on
description "My Soundcard with extra Volume Control"
Then I just choose Phonon as the mail output in sound preferences. Solved.

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[Solved] Multiple sounds at the same time

Hello!
I've just received my new Creative X-Fi Titanium since I was in need of an optical in socket and have spent a while trying to get it to work to my liking.
I read through the ALSA wiki, read countless posts on the forums such as this one http://bbs.archlinux.org/viewtopic.php?pid=702994, tried several .asoundrc files and of course read the related arch wiki pages without much success.
Everything is upmixed properly to 5.1 output but I still can't play two sounds at once - with one odd exception:
When I have mpd playing and start a youtube video, sound will play but it will only output through the 2 front speakers and I can pause and unpause mpd normally, sound will return.
When I pause mpd and play a youtube video, it gets upmixed properly but mpd returns "error: problems opening sound device".
Mplayer returns [AO_ALSA] alsa-lib: pcm_hw.c:1291:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p failed: Invalid argument and [AO_ALSA] alsa-lib: pcm_dmix.c:1060:(snd_pcm_dmix_open) unable to open slave.
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fuser -v /dev/snd/*
/dev/snd/controlC0: eyescream 27612 F.... Steam.exe
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fuser -v /dev/dsp*
zsh: no matches found: /dev/dsp*
cat .asoundrc
pcm.snd_card {
type hw
card 0 # change to your cards number or name
# 6 channel dmix:
pcm.dmix6 {
type dmix
ipc_key 1024
ipc_key_add_uid false
ipc_perm 0666
slave {
pcm "hw:0,0"
rate 48000
format "S32_LE"
channels 6
period_time 0
period_size 1024
buffer_time 0
buffer_size 8192
# upmixing:
pcm.ch51dup {
type route
slave.pcm dmix6
slave.channels 6
ttable.0.0 1
ttable.1.1 1
ttable.0.2 0.6
ttable.1.3 0.6
ttable.0.4 0.5
ttable.1.4 0.5
ttable.0.5 0.5
ttable.1.5 0.5
pcm.duplex {
type asym
playback.pcm "ch51dup" # upmix first
capture.pcm "hw:0"
# change default device:
pcm.!default {
type plug
slave {
pcm "duplex"
# for aoss
#pcm.dsp "duplex"
#pcm.dsp1 "duplex"
If anyone could hint me in the right direction as to how I could get it to work properly or provide me with a working .asoundrc, I'd appreciate it!
Last edited by eyescream (2010-02-25 19:30:30)

eyescream wrote:I can have sound in mpd and mplayer at the same time now
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eyescream wrote:The problem now is that mpd only outputs through my front speakers, so it isn't being upmixed anymore.
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eyescream wrote:What do you mean by not renaming "default" exactly?
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Last edited by brebs (2010-02-25 02:43:54)

Only one sound source at the time works.

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OSS doesn't play more than 1 sound at the same time [SOLVED]

Hello,
I use OSS to replace ALSA, it used to work properly here. Today I noticed that I can't play more than one sound at the same time, something which I used to be able to do.
Also, ossxmix doesn't operate properly (I can't control the volume of a specific program).
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Last edited by Renan Birck (2009-01-02 23:06:35)

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UPDATE 1: After a good night's sleep, and after doing a bit more reading on alsa-project.org (big props to this page), I managed to get a much better ~/.asoundrc together. It solves all my problems, and I can do everything I need. I've preserved the post below in case anyone else runs into these issues, and I'll post my solution as a response to this post.
UPDATE 2: Looks like I celebrated too early. Got more strange problems. Screw it, I'm going back to PulseAudio. I just wrote a wrapper script to kill and restart Pulse for applications that really, really need ALSA.
Okay. I've almost completely worn out my fingers trying to get this working. I feel like I'm playing Whack-a-Mole. This is a bit of a lengthy post, but I'll try my best to describe every problem I've encountered in as much detail as I can, followed by the solutions I found, followed by the problems each solution brought with it. By going through everything this way, mole by mole, hopefully it'll be easy to follow along and help me come to a universally working solution.
Summarized Version of Problems:
5.1 surround works only on specific applications which are robust enough to allow me to manually specify audio output options, and only if ALSA isn't configured at all
once I've configured ALSA, sound works on every application, but it's all downmixed to 2.0 stereo from this point on
installing PulseAudio lets me choose 5.1 surround as a default, but brings with it its own problems and drawbacks, namely the lack of passthrough support for encoded streams
Long-Winded Version:
I have my computer connected over HDMI to an AVR with a 5.1 surround speaker system. At first, I didn't have anything configured in ~/.asoundrc (or its global equivalent, /etc/asound.conf). Neither file existed, so everything was running off defaults. I got the name and device number of my card from aplay, ran speaker-test and played a six-channel test file in mplayer.
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
hdmi:CARD=HDMI,DEV=0
HDA Intel HDMI, HDMI 0
HDMI Audio Output
$ speaker-test -Dhdmi -c6
speaker-test 1.0.28
Playback device is hdmi
Stream parameters are 48000Hz, S16_LE, 6 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 349504
Period size range from 32 to 174752
Using max buffer size 349504
Periods = 4
was set period_size = 174752
was set buffer_size = 349504
0 - Front Left
4 - Front Center
1 - Front Right
3 - Rear Right
2 - Rear Left
5 - LFE
Time per period = 21.868405
$ mplayer -ao alsa:device=hdmi -channels 6 Nums_5dot1_24_48000.wav
MPlayer SVN-r37224 (C) 2000-2014 MPlayer Team
210 audio & 441 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing Nums_5dot1_24_48000.wav.
libavformat version 55.33.100 (internal)
Audio only file format detected.
Load subtitles in ./
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 6 ch, s24le, 6912.0 kbit/100.00% (ratio: 864000->864000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO_ALSA] Format s24le is not supported by hardware, trying default.
AO: [alsa] 48000Hz 6ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 8.6 (08.5) of 9.0 (09.0) 0.3%
Exiting... (End of file)
Everything seemed well, all six channels played from the correct location on both tests, but I did realize that the device number of the card was 3, not 0. A lot of applications that aren't as configurable expect the default card/device to be set properly, and audio won't work in those applications without specifying that in ALSA's configuration. Knowing this, I set the following in my ~/.asoundrc:
pcm.!default {
type hw
card HDMI
device 3
ctl.!default {
type hw
card HDMI
device 3
This, however, ended up causing more problems. Oh, it made sound work on everything by default after that, but only for one application at a time! That surpised me, as I thought ALSA's big advantage over OSS is that it can multitask. Running the speaker-test the way I did earlier turned out fine, but when I tried playing that test file in mplayer, things got weird again. Here's the output from mplayer:
$ mplayer -ao alsa -channels 6 Nums_5dot1_24_48000.wav
MPlayer SVN-r37224 (C) 2000-2014 MPlayer Team
210 audio & 441 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing Nums_5dot1_24_48000.wav.
libavformat version 55.33.100 (internal)
Audio only file format detected.
Load subtitles in ./
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 6 ch, s24le, 6912.0 kbit/100.00% (ratio: 864000->864000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO_ALSA] alsa-lib: pcm_hw.c:1557:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-2): No such file or directory
[AO_ALSA] Playback open error: No such file or directory
Failed to initialize audio driver 'alsa'
Could not open/initialize audio device -> no sound.
Audio: no sound
Video: no video
Exiting... (End of file)
Why the hell is it looking for pcmC0D0p? It should be looking at pcmC0D3p. Did it not get the memo from ~/.asoundrc? Urgh.
I've also tried '-af channels=6' in place of '-channels 6' but the same result happened. It does the same thing without the '-ao alsa' option, I just specified it to trim down the output, so that I wouldn't be copying and pasting all kinds of other errors about not finding OSS or JACK or other things I don't have installed.
If I symlink /dev/snd/pcmC0D0p to /dev/snd/pcmC0D3p, it'll fix the problem, but that feels like one ugly kludge. I'd have to do it again over and over every time I reboot, too.
Not sure if this would help matters or not, but if anyone knows how to change my card's device number from 3 to 0, I'd like to try that as well, but I'm not sure how to do that sort of thing. I'm just guessing it might be worth trying, since everything looks for card0/device0 by default, and that kludge I tried earlier did have an effect, so maybe if we can just switch those device numbers with each other, everything would work smoothly without having to force anything through ALSA's configuration at all. I believe card0/device0 belongs to the Host Bridge... is there a way to have them trade their device numbers for one another's in a safe manner?
I can also get it to play if I specify the device like I did in my first test, using '-ao alsa:device=hdmi', but that defeats the purpose of getting good defaults set if I still have to set everything by hand before I play something. If I try playing the test file without any options, like so:
$ mplayer Nums_5dot1_24_48000.wav
... it will play, but only in two-channel stereo, and the parts that should happen in the center, rear and LFE channels get downmixed into the left and right channels.
I can get it to work in aplay, though! All six channels! Not that I plan on using this as my primary multimedia software.
$ aplay -c6 Nums_5dot1_24_48000.wav
The only solution I found so far that allows me to have 5.1 audio by default is to install the PulseAudio server, which is able to find a sink/source named 'alsa_output.pci-0000_00_03.0.hdmi-surround' and lets me choose that as my default. Only problem with this is that PulseAudio has its own problems.
Aside from the crackling sound issues in some Wine games, Pulse also has a much bigger drawback -- a complete lack of passthrough support, meaning I can't use encoded streams such as Dolby DTS and TrueHD with PulseAudio. I have a Harman/Kardon AVR and I'd like to get my money's worth out of it, so I'd really like to figure out a solution in ALSA without using Pulse at all.
Does anyone know how I can have my cake and eat it, too? I just need 5.1 surround, by default, in ALSA without PulseAudio.
HUGE thanks to anyone who tries to help here. This is really making me sad and frustrated, I've been using Arch for quite a while now and this is the first real big stumper I've come across that forced me to post a thread. Otherwise I've been having a wonderful time.
Edited because I tried something different that removed *some* issues, but the above problems still remain.
Last edited by Rybelda (2014-10-27 22:10:24)

Well, I thought I fixed it doing this...
pcm.!default {
type plug
slave.pcm "dmixer"
pcm.dmixer {
type dmix
ipc_key 1138
ipc_key_add_uid true
slave {
pcm "hw:0,3"
format S32_LE
channels 8
rate 192000
period_size 9600
buffer_size 38400
... but then realized it strangely makes applications that run at 640x480 have no sound at all. No idea why the video resolution is screwing up the sound, but that's what's happening, because if I set the resolution any higher, the sound comes back.
I'm going back to PulseAudio, I feel like ALSA is mocking me. I wrote a wrapper script for the few times where pure, Pulse-less ALSA will be necessary for me. Here it is, in case it helps anyone else. I've tested it with XBMC, it turns off Pulse and allows ALSA to pass through encoded streams unhindered. It also works with some Wine applications that have scratchy audio glitches in Pulse.
#!/bin/bash
echo "autospawn = no" > $HOME/.config/pulse/client.conf
pulseaudio --kill &> /dev/null
"$*"
rm -f $HOME/.config/pulse/client.conf
pulseaudio --start &> /dev/null
I'm removing the SOLVED tag because technically I didn't resolve any of my original issues, I more or less gave up on what I wanted to do and found another way to satisfy my needs, but it still isn't as elegant as I had hoped for. In any case, I'm done with this issue for now and the forseeable near-future, but if anyone has anything further to add, feel free.
Last edited by Rybelda (2014-10-27 22:32:55)

Need Help On this(solve these 2 applications)

Hello All,
Find below the questions for Snooker scoreboard application programming in java and second one is an applet. Please solve the two applications and send me the code immediately to [email protected] and [email protected] .
I have the exam tomorrow and any help regarding this is appreciated.
1)
UNIVERSITY OF SUNDERLAND
SCHOOL OF COMPUTING AND TECHNOLOGY
MODULE CODE:      COMM3C
MODULE TITLE:      Java Network Programming
MODULE ASSESSOR:      Adrian Wadsworth
ASSESSMENT:      One of Two (Referred/Deferred)
TITLE OF ASSESSMENT:      Individual Assignment Snooker Scoreboard Application (4 pages)
MODERATED:      May 2006
PLEASE READ ALL INSTRUCTIONS AND INFORMATION CAREFULLY.
This assignment contributes 50% to your final module mark.
Please ensure that you retain a duplicate of your assignment. We are required to send samples of student work to the external examiners for moderation purposes. It will also safeguard in the unlikely event of your work going astray.
THE FOLLOWING LEARNING OUTCOMES WILL BE ASSESSED:
Knowledge of:
a.      Critical awareness of the issues and problems associated with the development of programs to run in a networked environment      �9
b.      Critical understanding of the Java and the web      �9
c.      Architectural issues of relating to distributed systems
d.      Critical awareness of network programs and network protocols      �9
and ability to:
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f.      Critically evaluate network technologies for specific requirements
g.      Design test a Java based on-line systems      �9
h.      Work as part of a team to develop a component based system.
i.      Use and critically evaluate Software Engineering tools      �9
IMPORTANT INFORMATION
You are required to submit your work within the bounds of the University Infringement of Assessment Regulations (see your Programme Guide). Plagiarism, paraphrasing and downloading large amounts of information from external sources, will not be tolerated and will be dealt with severely. Although you should make full use of any source material, which would normally be an occasional sentence and/or paragraph (referenced) followed by your own critical analysis/evaluation. You will receive no marks for work that is not your own. Your work may be subject to checks for originality which can include use of an electronic plagiarism detection service.
Where you are asked to submit an individual piece of work, the work must be entirely your own. The safety of your assessments is your responsibility. You must not permit another student access to your work.
Where referencing is required, unless otherwise stated, the Harvard referencing system must be used (see your Programme Guide).
Submission Date and Time      Before 4pm, Friday 1st September 2006
Submission Location      LRC, Reg Vardy Centre, St Peters Campus
Java Network Programming (COMM3C)
Assignment 1 (Referred/Deferred) May 2006
Snooker Scoreboard Application
This assignment is designed to consolidate the knowledge of the Java programming language you have gained in the first half of the course and to develop your skills in using basic Java input/output facilities, designing graphical user interfaces and implementing client-server systems.
The Application (70 marks)
You will develop a client/server based scoreboard application which will present and log the activity of a snooker match which may comprise a maximum of 15 frames. Your application must be capable of performing the following functions:
(a) Displaying the current score of each player for the current frame.
(b) Displaying the break for the player currently at the table.
(c) Displaying a record of the sequence of balls potted with their values during each break for each player during the current frame.
(d) Logging, and ultimately storing on a floppy disc in drive A, a record of the sequence of events occurring during a frame. This would include: fouls committed, balls potted with their values and which player potted them for each frame completed. This is intended to provide the definitive record for the frame. Note that, with the exception of player names, match identification and the date, no other information (such as the frame score) should be stored on disc.
(e) Recalling a frame's record from disc. The application must be able to process the data recalled from disc for any chosen frame and provide the following information:
i) the frame score and the highest break for each player,
ii) the number of points conceded as fouls by each player,
iii) the number of times each player visited the table,
vi) the number of times each colour ball (not reds or free balls) was
v) potted in the frame as a whole by each player.
The application must be developed as a client/server system using the loopback address so the client and the server can be run on the same computer.
The client will include the graphical User Interface (GUI) which will facilitate the entry of player names, a method of scoring, a method of displaying all required information and interaction with the server to allow data to be sent to it and recalled from it. See above for detailed requirements.
The server must facilitate the storage to and retrieval from floppy disc of match data and interaction with the client. The server need only be capable of interacting with a single client.
The Application (continued)
In addition to your report (see next page), you must submit a 3.5 inch virus checked floppy disc (CD's are NOT acceptable) which must contain four folders, described below, and nothing else.
Folder 1: The clientSource folder. Must contain all client source files and nothing else.
Folder 2: The clientClass folder. Must contain all client class files and nothing else.
Folder 3: The serverSource folder. Must contain all server source files and nothing else.
Folder 4: The serverClass folder. Must contain all server class files and nothing else.
Any number of client classes may be developed, but the class containing the client's main method must be called client. Any number of server classes may be developed, but the class containing the server's main method must be called server.
All applications must be executable directly from the command prompt window, without the use of an additional Integrated Development Environment such as Eclipse or JBuilder. You must clearly identify which version of Java you have used to develop your application.
Note that it will not be possible for you to include class files corresponding to source files which do not compile correctly. You must, however, include all of your source files in the appropriate folder regardless of whether or not they compile.
You should place the floppy disc in a small envelope and tape it to the front sheet of your report so that no text on the front sheet is obscured. Do not apply tape to the disc itself.
Report Submission Details (30 marks)
Your report must contain the following elements:
(a) a well commented source listing of the application source code (whether functional
or not). Note that sections of code which do not function correctly should be clearly identified by the words "NOT FULLY FUNCTIONAL" and accompanied by a brief hand written explanation of the problem.
(b) a maximum of four screen shots showing the application in action
(c) a conclusion, with clearly marked sub-headings, which must include:
i) a clear statement of the extent of the application's functionality,
ii) a brief explanation of how to use your version of the application,
iii) a description of how you have made the application robust,
iv) any other commentary that you feel is relevant.
Your report must be presented on A4 sheets of paper which must be stapled together at the top left corner to allow access to all of the report�s contents without removing the staple.
If your report is too thick to be secured using a staple, punch a hole in the top left corner and bind the pages together with a treasury tag.
Your report must not be submitted in any type of cover or folder.
Your name, my name and the module number must be clearly displayed on the front sheet of your submission.
No other information, designs or motifs should appear on the front sheet.
Note that all the pages of this assignment must be submitted with your report and must immediately follow the front sheet.
Your report must NOT be submitted electronically and must NOT be included on your floppy disc.
Failure to comply with the requested report and floppy disc submission format will result in the allocation of a significantly reduced mark.
A.Wadsworth
2)UNIVERSITY OF SUNDERLAND
SCHOOL OF COMPUTING AND TECHNOLOGY
MODULE CODE:      COMM3C
MODULE TITLE:      Java Network Programming
MODULE ASSESSOR:      John Tindle
ASSIGNMENT      Two of Two (Referred/Deferred)
TITLE OF ASSIGNMENT:      Java Media Player
MODERATED:      May 2006
PLEASE READ ALL INSTRUCTIONS AND INFORMATION CAREFULLY.
This assignment contributes 50% to your final module mark.
Please ensure that you retain a duplicate of your assignment. We are required to send samples of student work to the external examiners for moderation purposes. It will also safeguard in the unlikely event of your work going astray.
THE FOLLOWING LEARNING OUTCOMES WILL BE ASSESSED:
Knowledge of:
a.      Critical awareness of the issues and problems associated with the development of programs to run in a networked environment      �9
b.      Critical understanding of the Java and the web      �9
c.      Architectural issues of relating to distributed systems
d.      Critical awareness of network programs and network protocols      �9
and ability to:
e.      Design and implement a Java applet or application      �9
f.      Critically evaluate network technologies for specific requirements      �9
g.      Design test a Java based on-line systems      �9
h.      Work as part of a team to develop a component based system.
i.      Use and critically evaluate Software Engineering tools      �9
IMPORTANT INFORMATION
You are required to submit your work within the bounds of the University Infringement of Assessment Regulations (see your Programme Guide). Plagiarism, paraphrasing and downloading large amounts of information from external sources, will not be tolerated and will be dealt with severely. Although you should make full use of any source material, which would normally be an occasional sentence and/or paragraph (referenced) followed by your own critical analysis/evaluation. You will receive no marks for work that is not your own.
Where you are asked to submit an individual piece of work, the work must be entirely your own. The safety of your assessments is your responsibility. You must not permit another student access to your work.
Where referencing is required, unless otherwise stated, the Harvard referencing system must be used (see your Programme Guide).
Submission Date and Time      Before 4pm, Friday 1st September 2006
Submission Location      LRC, Reg Vardy Centre, St Peters Campus
Module COMM3C Java Network Programming
Assignment 2 (Referred/Deferred) May 2006
Java Media Framework
Part 1 Research Topics
The Java Media Framework API (JMF) enables audio, video and other time-based media to be added to applications and applets built on Java technology. This optional package, which can capture, playback, stream, and transcode multiple media formats, extends the Java 2 Platform, Standard Edition (J2SE) for multimedia developers by providing a powerful toolkit to develop scalable, cross-platform technology.
The aim of this assignment is to develop the skills required by a network systems developer so that they are able to incorporate standard Java components code into their own projects.
Here is a link the JMF website
http://java.sun.com/products/java-media/jmf/
JMF documentation
http://java.sun.com/products/java-media/jmf/reference/docs/index.html
JMF code examples
http://java.sun.com/products/java-media/jmf/reference/codesamples/index.html
JMF Documentation
http://java.sun.com/products/java-media/jmf/2.1.1/specdownload.html
Download and read the JMF API Guide
https://sdlc3a.sun.com/ECom/EComActionServlet;jsessionid=1BA18CD12B4C0D0DEC445DAAD5522248
Research the topics given in Part 1 and answer the questions listed below.
Describe the structure and mode of operation of the JMF in your own words.
Describe in your answer Controller Event (ref p30 JMF API Guide)
Describe in your answer Standard Controls (ref p20 JMF API Guide)
Describe in your answer Presenting RTP Media Streams (ref p68 JMF API Guide)
Describe in your answer Capturing Time Based Media (ref p77 JMF API Guide)
Describe what is meant by a Media Processor and a Media Player. How do they differ?
Part 2 SimplePlayerApplet.java
Download the Java Applet, modify the source code and add it to a package within a Java Project. Recompile the Applet using JBuilder. Please refer to the following two links:
Code examples
http://java.sun.com/products/java-media/jmf/reference/codesamples/index.html
SimplePlayerApplet.java
http://java.sun.com/products/java-media/jmf/2.1.1/samples/samples/SimplePlayerApplet.java
Download the JMF library and add it to the JBuilder IDE using the Project Properties function.
Download the JMF library using this link
http://java.sun.com/products/java-media/jmf/2.1.1/download.html
Describe how you developed the applet SimplePlayerApplet.java
Describe how you tested SimplePlayerApplet.java.
Use the JB Builder/Designer tool to add two buttons to a Frame to start and stop the AppletPlayer.
Upload the Applet online to your CET website.
Set the access rights so that the Applet will run online via browser.
Test the Applet using a browser.
Provide screenshots to prove the Applet runs satisfactorily online.
Here is a link to view the operation of the JMF Player
http://osiris.sunderland.ac.uk/~cs0jti/NetSys/website/data-archive/COMM3C-JavaNP/JavaMediaFramework/SimplePlayerApplet/classes/
To run the Applet click on SimplePlayerApplet.html
To run this applet in your browser you must install the Java Runtime Environment and the JMF.
http://java.sun.com/j2se/1.4.2/download.html
To run the Applet it is also recommended that a codec pack is installed.
Here is a link to freecodecs.com
http://www.free-codecs.com/download/K_Lite_Codec_Pack.htm
The following codec packs have been found to work satisfactorily with the JMG Applet.
Install either the (i) K-Lite Code Pack or the (ii) XP Codec Pack
Note - Do not install both codec packs at the same time.
Video clips may be found at this URL
http://osiris.sunderland.ac.uk/~cs0jti/NetSys/website/data-archive/COMM3C-JavaNP/JavaMediaFramework/
Tests have shown that the following files are compatible with the JMF Player,
1 - eng.avi
2 - movie.mpeg
3 - hvid.avi
Note
If any of the links given above are broken then students may find copies of this data stored at the following URL.
http://cet-netres-srv.sunderland.ac.uk/website/Archive2006/JMF/SimpleAppletPlayer/
Student Report Structure
     1. Write and submit an original report relating to the design of your Java application.
     2. Provide a printed report. Your mark will primarily be obtained from your printed report.
     3. The contents of the report must be completely original, this includes text, diagrams and any simple examples.
     4. Students are required to submit a disk with their JBuilder Java Projects.
     5. Students must put their disk in an envelope and attach it their report.
     6. If the disk is directly sellotaped to the report their project code will be allocated a mark of 0.
     7. The report submitted must not exceed the page count excluding the front sheet and index.
     8. Students should print on just one side of the paper.
     9. Staple your report at the top left hand corner.
     10. Do not use plastic folders or envelopes that must be taken apart and reassembled.
     11. Required font type Arial or Times Roman and size 12.
     12. To obtain high marks students must present work that has a high technical content with clear diagrams and a good standard of original English (your own work), that is not taken from standard textbooks, papers or websites.
     13. Students should provide good references and link them with the text and diagrams in the main body of their report. All text that is extracted and added from another source, such as the web, must be identified using bold italics. The total amount of text added that is not original must not exceed 5% of the total.
     14. Penalties will be incurred for the following
No name on disk
No name on report
Disk Sellotaped to report
Report in a plastic folder
JB project is incomplete or will not compile.
Moderated by MSc Moderation Panel May 2006
Reference: jmf-2006-v4-modified.htm
A copy of this assignment may be found online at URL
http://osiris.sunderland.ac.uk/~cs0jti
Name
Frontpage 1 side of A4 Index 1 side of A4
Part 1 Research into JMF 4 sides of A4 Marks 30
Controller Event
Standard Controls
Presenting RTP Media Streams
Capturing Time Based Media
Player vs processor
JMF Plug-ins
Part 2 SimplePlayerApplet.java 3 sides of A4 Marks 60
Link for application
Description of development
Start and Stop buttons
Description of testing
Online test � applet works
Screenshots
JB project loads
JB code runs - 20 marks
References 1 side of A4 Marks 10
List of references
Correct use of refs in main text
2)

Plagiarism, paraphrasing and downloading largeamounts of >information from external sources, will
not be tolerated and will be >dealt with severely.
You will receive no marks for work that is not yourown. Your work may >be subject to checks for
originality which can include use of an >electronic
plagiarism detection service.Hey, the OP didn't read the rest of the assignment so why should they read that part?

Sound application help

here is another example of a sound application that does not work. can any one help me fix it??
import java.awt.*;
import java.applet.*;
import java.net.URL;
public class AnotherAudioAttempt{
public static void AlertSound(){
    try{
      java.io.File file = new java.io.File("file:///home/nova812/myJava/audio/siren.au");
      AudioClip welldoneclip = Applet.newAudioClip(file.toURL());
      welldoneclip.play();
    catch (Exception e){}
public static void main(String[] argz){
    AlertSound();
}//end classRon_W

I did try System.in.read() but it didn't work either. However, going the the archives here I found a version of the following code. finally some code that works. I modified it so that it would play a sound when the app starts. Althoug the code works, pushing the play sound button to fast will cause the app to not play a sound for a long time. some tweeking is needed.
import java.awt.event.*;
import java.awt.*;
import java.applet.*;
import java.net.*;
import java.io.*;
public class PlaySound {
public static void main(String args[]) {
new PlaySoundFrame();
class PlaySoundFrame extends Frame implements ActionListener {
Button playSound = new Button("Play Sound");
PlaySoundFrame() {
    super();
    /* Add the window listener */
    addWindowListener(new WindowAdapter() {
    public void windowClosing(WindowEvent evt) {
      dispose(); System.exit(0);}});
    playSound.addActionListener(this);
    add(BorderLayout.NORTH,playSound);
    /* Size the frame */
    setSize(200,200);
    /* Center the frame */
    Dimension screenDim = Toolkit.getDefaultToolkit().getScreenSize
    Rectangle frameDim = getBounds();
    setLocation((screenDim.width - frameDim.width) / 2,
    (screenDim.height - frameDim.height) / 2);
    /* Show the frame */
    setVisible(true);
    playSnd();
public void playSnd(){
   AudioClip ac = null;
      try{
        ac = Applet.newAudioClip(new URL("file:///home/nova812/myJava/audio/siren.au"));
      catch(MalformedURLException mfe){
      System.out.println("BadURL!");
      if(ac != null)
        ac.play();
      else
        System.out.println("no sound!!");
public void actionPerformed(ActionEvent evt){
    if (evt.getSource() == playSound){
      playSnd();
}Ron_W

(Solved) one sound application at a time

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