Theres meant to be inflight music? Damn.
I've looked around to see why it might not be working, but can't check anything because I'm at work. I would guess you have a SBlive/AC97 on-board sound, since they are the most popular?
Try going into control panel > sounds and multimedia > audio > and changing the MIDI device around. It would be useful if someone with an SBlive/AC97 who has music working could post their setting.
This isn't guaranteed or anything, but its the only thing I can see that would be that different since the win95 version should be making calls directly to windows for the MIDI (I think).