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Old 06-16-2008, 04:12 AM   #1
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Can't open audio device. Device or resource busy.

When I play any media file, the sound comes. But when I do it the second time, or may be when I use a different application, I get this error, and I do not get any audio.

What to do? The mplayer code is given below:
MPlayer 1.0rc2-4.2.3 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (Family: 15, Model: 4, Stepping: 1)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

Playing andagara-alimayya.mp3.
Audio file file format detected.
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
[AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or resource busy
Opening /dev/dvb/adapter0/audio0
DVB AUDIO DEVICE: No such file or directory
AO: [null] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A:   2.8 (02.8) of 301.0 (05:01.0)  0.6%
Old 06-16-2008, 07:22 AM   #2
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Try configuring your applications or desktop to use alsa and see if that makes a difference.
Old 06-16-2008, 09:36 AM   #3
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[AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or resource busy
You shouldn't be using OSS, any application using OSS locks the audio device for itself. You need to configure your applications to use either ALSA, ESD, arts or any other thing. I just disable OSS on my kernel, since ALSA can still emulate it for applications that can only work with OSS.

Mplayer can use alsa implicitly if you tell it this way:

mplayer -ao alsa videofile.avi
But it should just use it instead of oss if it's available, so maybe there's some problem with your kernel or there's just some other program that's implicitly using oss.


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