Miracle Yokuba

Hello Guys, know anyone of you how do I convert GSF Datas into MIDI datas? I ask because I want the MIDIs from the GBA game Mother 3. I´ve tried already GBA2MIDI, Sappy etc. but the programs says everytime: " This ROM is unsupported by .... " Now anyone a another way to convert the GSFs into MIDI? *Sorry for my bad english..*