Paul, I've done a bunch of work over the last few days with a problem I was experiencing using Rosegarden to play MIDI and then receive and record the audio from external sound sources in Ardour. First, yes, it really works, and actually works pretty nicely. Jack, Ardour and Rosegarden are all playing nicely together. However, I have found that: 1) There is a severe timing problem when using the HDSP MIDI interface under Linux. Over time the HDSP 9652 just gets further and further behind. 2) There is no problem with the HDSP MIDI interface under Windows. 3) Thee is no problem with the MidiMan 2x2 interface under Linux. The problem seems to be pretty clearly the way the Linux stack is using the HDSP 9652 MIDI interface. I'm guessing it's a driver problem, but I don't want to color the perception. I know it's a newer driver. How can we go about debugging this and getting it fixed? I can post mp3's of all these cases for people to hear if it is desirable. I have lots more technical data to relate once we decide how to go about solving the problem. Thanks in advance! The fact that I have all this software working as well as it is is a great accomplishment for me, and due to a lot of great programmers out there like you guys! Cheers, Mark