Jake wrote:1. Not sure to be honest - audio can be quite an intensive task - for the cost of purchasing an additional Pi I think this is the better route.
2. As above, single Pi per audio channel will uncomplicate things immensely.
3. Depends on the audio device being used. Raspian is the official distro, and compatible with the widest range of drivers in addition to being constantly updated and upraged. You may find that alternative distro's do not have the same compatibility.
If you want high quality audio, then you'll need to look into DAC's/AMP's etc. of which there are a rather large selection. Otherwise a simple USB sound adaptor will for do the job.
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