Hello The Beta 1 version of the plug in is now available on www.geethree.com :-) This driver allow to use most of the Serial midi interfaces with MAC OS X 10.2.3 and the Stealth port So far it has been reported working with : - 1 Emagic Unitor 8 - 2 Motu MIDI Time Piece II AV - 1 MAC Midiman - 1 Motu MIDI Time Piece AV - 1 J L Cooper synclink serial - 1 Motu MidiExpress+ MT4 - 2 Motu MIDI Time Piece II - 1 Opcode Studio 4 - 1 Opcode Studio 64 + Emagic Unitor 8 MarkII (USB) - 1 Motu MTP A/V and 1 Motu MTP II Best Cyril P.S. can you pass this information to other user group (Cubase, Motu .......) ;-) If you have it working with other midi configuration give me a short email :-)