If you use TablEdit's midi player as a practice aid, as I do, you might want to watch out for "funny" metronome beats per minute settings. I just discovered that if I enter a metronome speed, the player plays at only 2/3 of what I set. I have noticed this only in 6/8 time signature. I have not checked on 9/8 or 12/8 times. I call it a bug. I can visualize the kind of faulty logic that would generate this result in the program code. But it isn't my program to fix. I'll try to send a note to the developer and see what happens.