Greetings all,  In response to James Huffer's query about the MIDI
file problem he is experiencing, it sounds like the treble is sent on
channel one and the bass on channel two [and the piano is recognizing
only the channel one data].

I don't believe that Windows Media Player is capable of playing more
than one MIDI track [channel] at a time.  That would require a program
like Cakewalk or MasterTracks to hear multi-track MIDI files.  There
may also be shareware or freeware programs that can do the same thing.

Cheers,
John McClelland