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Old 09-21-2005, 09:41 AM   #1
Registered: Nov 2003
Location: Mestre - ITALY
Distribution: Debian sarge
Posts: 132

Rep: Reputation: 15
cannot play sound from different sources at the same time with ALSA

this is my problem:
few days ago i was listening to music with beep-media-player (ALSA output plugin) and at the same time, i opened a link in firefox containing a straming video ready to be plaied by mozilla mplayer plug-in
the video did not start. i tried to stop beep media player and the video started.
i have tried to do the contrary process, playing mplayer and then playing from beep-media-player but i get this error:
control that:
1. you have selected the right output plugin.
2. other programs are not blocking the sound card.
3. your audio card is configured.

My question is:
it is possible to play different sounds at the same time?? if so, please tell me what to do

here is some boring informations:

My kernel configuration

system debian gnu/linux sarge kernel 2.5.16
alsa version: 1.0.8-7
sound card: integrated i810

Old 09-21-2005, 12:46 PM   #2
Senior Member
Registered: Jun 2004
Posts: 2,553

Rep: Reputation: 53
research implementing "dmix" plugin for your card using ~/.asoundrc
Old 09-21-2005, 04:04 PM   #3
Registered: Nov 2003
Location: Mestre - ITALY
Distribution: Debian sarge
Posts: 132

Original Poster
Rep: Reputation: 15
thank you friend, i have foud how to configure it properly in the alsa website.
i added these lines

    pcm.!default {
	type plug
	slave.pcm "dmixer"

    pcm.dmixer  {
	type dmix
	ipc_key 1024
	slave {
	    pcm "hw:1,0"
	    period_time 0
	    period_size 1024
	    buffer_size 4096
	    rate 44100
	bindings {
	    0 0
	    1 1
    ctl.dmixer {
	type hw
	card 0
and now i can play (using alsa) from different sources without any problem!

bye thank you very much


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