On 22-06-08 22:10, Jerry Geis wrote:

> play wavefile.wav works fine

"play" is using the OSS interface ...

> aplay wavefile.wav shows this:
> 
> ALSA lib pcm_dmix.c:1046:(snd_pcm_dmix_open) unable to open slave
> aplay: main:564: audio open error: Invalid argument

... and this might indicate a permission problem on the ALSA device 
nodes. What does ls -ld /dev/snd and ls -l /dev/snd say? Are you a 
member of the group which has access? (try "id" from a terminal if 
you're not sure).

If that's not it things become more involved but it's somewhat likely I 
guess.

Rene.

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