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Re: How to have a multiple sound card use ?

On Tue, 29 Jun 2010, David DEMELIER wrote:
When you are running an application that sits on a audio device, every
other application that needs it will fails opening it and they will
say "device busy". I heard that we need to have a sound server running
to be able to do this : having many applications running on the same
sound card.

You can do this in userland with a sound server such as pulseaudio, but a) it's a point of failure and b) client software needs to be compiled to use it.

Better yet is an in-kernel audio mixer which gives a different audio device that allows multiple opens and can mix the streams. Then you simply need to point your software at the alternative mixer device (probably via a symlink in /dev). See the proposed project here:


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