JMF-based applet can not detect audio devices on Vista (?)

Question

Hi,
As many people reported, I encountered the same issue - CaptureDeviceManager.getDeviceList does not detect any audio device on IE/Vista.
Here is my testing environment:
HP XW4600, RealTek HD Audio onboard sound card,
Vista SP1 (Business, Home Premium, and Vista64)
JRE1.5.0_16, JMF2.1.1e
A recording Applet runs in IE7 (which works fine on XP and its Java application version always works fine on Vista)
I have tried a number of things without success:
1)Use different audio formats as the input parameter for getDeviceList
2)Try CaptureDeviceManager.getDevice(new String("DirectSoundCapture"))
3)CaptureDeviceInfo info = new CaptureDeviceInfo(com.sun.media.protocol.dsound.DataSource.NAME,new MediaLocator("dsound://"),null);
4) Vector devices = (Vector) CaptureDeviceManager.getDeviceList(null).clone();
5)Uncheck UAC(Vista User Access Control)
6)Set IE settings least restrictive
7)Try signed or unsigned recording Applet
8)Pack the recording Applet to a jar and deploy to JRE\lib\ext
9)Run JMFInit and copy the files in JMF\Lib to System32 folder
On a few occasions, audio devices can be detected. For examples,
10)Upgrading an HP XW4200 (XP machine with AC�97 codecs driver) to Vista,
11)1/5 chance on the machines with both Sun JRE and MS Java SDK installed.
12)Trying Item # 9. it worked once on one machine, but after rebuilding the machine, the same trick does not play.
I am wondering if there is a way to let JMF-based applets detect audio devices on Vista or this is an inherent problem with JMF, IE and Vista.
I would appreciate it very much if you�d kindly offer any help and suggestions.
-Belfield

Answer 1

>
As many people reported, I encountered the same issue - CaptureDeviceManager.getDeviceList does not detect any audio device on IE/Vista.>(..in an applet)
>
I would appreciate it very much if you'd kindly offer any help and suggestions. >I suspect the basic problem here, is the installer that defaults to preventing the applet access to record sound (I am guessing that would 'spill over' into web-cam permissions). A quick test of that is to try the same code as an application.
If the application works, one possible fix is to launch the application using webstart. Webstart will work from a web page, and offers many other advantages over a standard applet.