[openal] MIDI support

[Chris Robinson]

On 01/23/2014 07:11 AM, Doug Binks wrote:
> MIDI support looks interesting, but I was wondering if this could
> potentially be used as a positional source?

I think the individual notes would be more analogous to sources, rather 
than the mixed output. Each note can be panned, attenuated, pitch 
shifted, etc, individually, which then gets mixed to dry and wet paths.