Robert Stanford wrote:
>        I'm looking at setting up a box/s to provide individual audio
> streams to 15 pairs of sterio speakers,

Currently, ALSA cannot handle more than 8 cards, so you need to use
multichannel cards.  And most of those don't have several stereo
devices per card, but one device with more than two channels, so in
order to access the stereo pairs independently you have to do some
.asoundrc hacking, which won't work with all OSS applications.

> 2.Alsamixer seems to only be able to handle the first 4 cards

By default, the snddevices script creates device nodes for the first
four cards only.  At the beginning of alsa-driver/snddevices, change
the definition of MAX_CARDS to 8 and run snddevices again.


HTH
Clemens




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