There are several things I could think of MBL, but I know nothing at all about the Vasco player. The midifiles I made with my 740 when I had it played fine on all of my other sequencers and synths, ( soft or hardware ) although the instruments don't aleways sound quite the same and the effects routing isn't always right. First I'd check to insure that the Vasco player is set up to properly understand the midi messages from the midfile. Is there a function on it that is set to filter program change messages and events ?

While it is true that the 740 uses the standard midi patches as the base for its' tones the xg part adds bank #s ( usually defaulted at bank 0 for smf format ). It also adds xg sysex info. Either of these things might possibly be giving the Vasco player messages that it can't work with. One thing right off the bat though is that on the 740, percussion tracks are recorded on channel 9. Most Standard midi file only players by default won't read that as drum info. They only read drum info on channel 10 by default, so in order to get that part to work, you'll likely need to move all the drum data that was recorded on channel 9 to channel 10. Have you tried using the regular windows media player on your computer? If so how do the midifiles sound when played on your default synth from your soundcard ? I realize that most soundcard synths won't sound that good, but do the instruments at least correspond ?

Korg AJ