This routine will convert a midifile FORMAT 1 to midifile FORMAT 0. The only META events converted are TEMPO and END OF TRACK. I found this to be no problem but if anyone disagrees I would like to hear from you. This routine will convert files sizes up to the maximum of an ULONG. (Which equals a HUGE file) You can use PLAYMF by Bill Barton to play the converted file as long as the converted file is 32k or less. PLAYMF is a utility that came with the midi.library archive found elsewhere in this forum.(MIDI20.???,I think) Place "Mff1To0" in your C: directory and execute from CLI using the following format: "Mff1to0 " I have converted over 100 files without error but if anyone is having problems or has any suggestions please contact me at: Cor Dikland 72030,3255