Timidity++ is basically a command-line based MIDI file player that will give you a new respect for the MIDI format. Rather than use the built-in instruments of your sound card, which can sound rather poor, Timidity++ uses software-based instrument patches which sound extremely good. Timidity++ by itself has no instrument patches but timidity-patches will provide them. Timidity++ does not depend on Timidity-patches because you can use many different patches available free and for a price from various sources. Playing a MIDI file with Timidity++ and the Timidity-patches will sound very like the real thing! You will never what to use the built-in instruments of your sound card again! Timidity++ also has a few different GUI's available, but these need to be compiled in. They are based on gtk+, motif or lesstif, even an ncurses interface can be compiled in. I've played with a few of these and find the gtk+ GUI to be quite easy to use, although it does generate a few errors, I've never had it crash or hang on me. And I have used it quite a bit. You would need to try the different interfaces and see which would be best for the DebianJr project.
You can use Graphical Timidity. See Timidity
See also:
http://packages.debian.org/timidity---- http://bugs.debian.org/timidity