Wanted to let everyone know thanks for the massive assists so far.  Got jack, qtractor, zynsubbaddfx, going and talking to each other and to/from the Yamaha keyboard via standard game (EMU10k1) port MIDI.  Family was quite impressed could play Yamaha keyboard from computer and vice-versa.  Zyn never sounded so beautiful. HT to Paul Nasca. Ubuntu 9.04 on Dell Dimension 4400 with 1gb ram EMU10k1 soundcard with MIDI connected via game ports zyn = 2.2.1-4.1ubuntu1 qtractor = 0.3.0-0ubuntu1 qjackctl = 0.3.4 ardour = 1:2.7.1-2ubuntu1  ** Have been unable to get it to record MIDI as yet   Jack settings: priority is hard set to default for whatever reason (thought I saw something in an earlier thread about it being set to zero.  Not sure how to fix that part (or if I am totally off-base).  Frames/period are 128 and sample rate is 48000 while periods per buffer is set at 2.  I know several have suggested trying to set it at 3-5 and it refuses to do so (most often resulting in a crash).  It claims to be running real-time, just not sure why it gave 88 xruns in 35 minutes of playing. ulimit -r = 99 ulimit -l = 64 Not sure what else anyone might need to help troubleshoot, so will await replies. Thanks in advance   Paul