[Openal] Software Renderer and Varying Capacities

[Daniel Cruver]

When working with a machine that does not have native support for OpenAL i.e.
uses the software renderer provided by Creative I have found weird
inconsistencies.

When developing on a vista machine it always had 256 mono sources minus how
many stereo sources I specifically specified in alcCreateContext function.
It correctly worked if I told it to reserve 10 sources for stereo on the
vista machine.  But then I transferred it to a XP machine and found it had
less sources to work with, only 32.  As you are aware their is no
DirectSound Hardware support on Vista so the 256 mono sources would always
be software mixed.  But the software renderer on XP has less default sources
to work with, could this because their is partial hardware support via
DirectSound.  It leads me to think this because:

1.) Other media programs when open when running application seem to take
away from the 32 available sources I can run.
2.) When running more then one occurrences of my application I notice that
any additional application that are run while the first one is running have
the 256 sources.  This really makes me think that the first occurrence has
"more" hardware supported processing while the additional occurrences will
default to 256 sources like the Vista machine does.
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