This is an utility I wrote to help me understand the sequenced music data in Mario 64.
The .m64 files are raw sequence data ripped from the ROM.
To use it, just type m64parser input_file.m64 > output.txt
You can use the "Sequence Bank Ripper" (seq_rip.exe) to extract all sequences from a Mario 64,
Mario Kart 64 or Wave Race 64 ROM. Check seq_rip.txt for further instructions.