Everytime I close the app, I get a message that pops up and says "the app quit unexpectedly." That shouldn't happen because I quit the app intentionally. It's not a huge problem, but it gets annoying after a while. Plus, a report is automatically sent to Apple when that error comes up, so in other words, Apple will know everytime I close GM Player. The app itself works great. It plays all my midi files with no problems (at least so far). They all sound as expected: reverb, tempo, instrument, tracks, all attributes seem to be output properly. The only problem I'm having (again) is the "quit unexpecredly" error that comes up whenever I close the app. Hopefully this can be fixed.

My BFD3 drum exported .mid files appear to play back as a piano sound only when dragged into player. Not only can't I change the sound being played ( probably set to ch1 or nothing) but I can't access a GM drum kit w these files. Its worth noting other compa ies Drum .mid files do play correctly on this app. Is there a way to force this app to play a .mid file as a ch10 GM drum file?

This is the best tool found for quickly playing midi files. Also very useful for testing out accompaniments in different instrument settings.Basically love it. Worth every penny. Using it with the Nektar SE 61. Beats all other badly done UI keyboard hardware with just the simple Nektar SE and the GM Midi application.Only wish two things:1) It had a playback bar and slider to see what time location is playing and to move around to different parts of the song. 2) Higher range (gain) on the volume control. Even at the highest setting it is not equal to normal volume levels from other apps. Thus is it hard to use in combination with anything else playing audio.

Hoping to use it with the built in Mac OS general midi instruments as an alternative to Garage Band sounnds.