LSDJ-MC2 with Arduino

Hello fellow Arduinans, Im going to build a LSDJ-MC2 circuit (which gives my Gameboy Advance MIDI functionality), and i was curious if i could build it with my arduino rather than bother with burning the pic chip they suggest.. (i dont have a PIC burner). Here is the link with all the details. (look under the Do it yourself section) http://www.firestarter-music.de/lsdj/

Anyhelp would be greatly apprecitated. Thanks