It does play MIDI files, however the UI is horrid, dark and dreary, hard to read--the file manager is custom to the application with the same dreary and dificult to see theme...
The only reason I installed it was for my TuxGuitar sound problem, this fixed it. A must if you have Tuxguitar.
/etc/timidity/freepats.cfg: No such file or directory timidity: Error reading configuration file. Please check /etc/timidity/timidity.cfg
Very good sound. In the midi file Properties I Add the OpenWith command: "xterm -e timidity"
Finding this midi sequencer made my day. I'd previously given up on trying to get MIDI files to play under linux, but this allows them to work!