[SOLVED] mplayer no sound alsa

Question

In KDE multimedia settings I'm using phonon-gstreamer and I have also tried changing to phono-vlc. Sound in the application 'Clementine' doesn't work either. Sound is working fine for KDE desktop effects, amarok, juk, and dragonplayer, and Flash.
Using smplayer audio options I have set to alsa, and have tried all the alsa 0.1 etc options -- none work. I have also tried mplayer -vo alsa
mplayer ran from shell:
[AO_ALSA] alsa-lib: pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC1D0p' failed (-2): No such file or directory
[AO_ALSA] Playback open error: No such file or directory
[AO_ALSA] alsa-lib: pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC1D0p' failed (-2): No such file or directory
Could this issue be because for alsa I have  set my default sound card in user space (because I have USB mic)?
~/.asoundrc:
# Setting default device
pcm.!default {
type hw
card 1
device 0
ctl.!default {
type hw
card 1
device 0
# Enable mixing
pcm.dsp {
type plug
slave.pcm "dmix"
Last edited by ScannerDarkly (2011-07-16 20:30:29)

Answer 1

As you mention, sound from kde notifications and other phonon-based apps work. That means your phonon subsystem is working fine. Changing backends doesn't particularly help if both are working equally well.
Clementine does not use phonon and instead uses gstreamer directly. I believe the devs note that this is because phonon lacks some features relating to visualization. I have no experience using gstreamer and I could never get clementine to work on my systems. So, I have no suggestions for troubleshooting that (sorry!).
To set the audio out, you need to use ao, not vo (e.g. mplayer -ao alsa). I'm guessing that was just a typo.
If this is caused by your customization, can you back up your ~/.asoundrc and relogin to see if things still work (or simpler, try using a fresh temp user account)?