This just hit my mailbox, from Matthijs Hollemans to the OpenBeOS mailing list. As the title says, the MIDI Kit has reached Milestone 2. It features a completed libmidi2.so, so you can now send and receive MIDI events. As Matthijs says, the kit is fully functional, apart from not having a softsynth and the ability to talk to hardware devices.
You if you'd like, you can click right
here and download an already compiled package, which can work side by side with R5's MIDI Kit. Don't forget to give feedback. Good job guys, keep it up.