The address for ALSA is: alsa-project.org I cannot find any evidence that we would find a major benefit by looking at ALSA, as(AFAIAA)it is a library for a low latency Linux sound card implementation, and it is LGPL. I'm afraid the MIT liscense may start biting us in the ass on this one, as Linux has a lot of resources available, but very few in BSD or similar free liscenses. I believe MIDI in Linux is covered by a /dev/midi, or something like that. This is what I remember from the agonizing attempts at getting MIDI working over a year ago. However, I can't possibly be conisidered an authority on this. MIDI is an exceedingly simple serial protocol, which is available for all to observe and learn. I don't necessarily think it is the best idea to be worrying about hardware drivers at this junture(just a thought). For one thing, a great deal of MIDI interfaces these days are popping up in all sorts of places, especially USB. You've probably noticed that I'm rambling like mad at this point, and that is because I'm at a loss as to where to begin. Is there a resource online with which I can observe the MIDI api implementation in Beos? I can provide links/documentation for the MIDI spec to all that may be interested. -M