Add native Haiku midi support to the SDL_Mixer port
completed by: yeputons
mentors: Bruno Albuquerque, Jérôme Duval
http://ports.haiku-files.org/ticket/365
You can see the Win32 and MacOS implementations for an example:
http://hg.libsdl.org/SDL_mixer/file/30976a327fd3/native_midi
You would need to create a similar file to map the SDL midi calls to Haiku's BeAPI midi calls.