"For these to work the song must have valid start and end commands in the sequencer."

.... thnx BeBop ... perhaps this is the problem ... I primarily want to use this feature for midi files to play while I am taking a break, (but of course would use it for 'dance sets' as well) ... maybe the 'start/end' commands ar missing from the midi files? ... how can I check this?
thnx,
t.
PS ... feeling better?