Here is a video tutorial I uploaded a couple of weeks ago which some people may find helpful. It covers the process of converting a MIDI to a SSEQ then compiling and inserting an SDAT into the ROM. My pre-extracted SM64DS SDAT files will be of no use in another game, so you will need to extract the SDAT files using Kiwi.ds before you begin. Kiwi.ds will order the files alphabetically upon compiling the SDAT, so you must add a preceding number to file name of each SSEQ/SWAV/SWAR/SBNK in order for them to keep their original formation. I will answer any questions in this thread, and I must also apologize for the atrocious spelling error in the title.