I just felt this is a missed opportunity to work collaboratively. Unless the author knows about wine and nonetheless chose to start a new project. Which is completely fine too.
My library uses a "pull"-model, meaning the application must call a function to render more music. DirectMusic was more of an unattended "push"-model where you'd just tell it to play something and it'd set up playback automatically. It'd just play the music in a background thread (maybe even on hardware) and your application could subscribe to certain events (like get a callback on every beat).