On the Jak and Daxter disc there is a folder called MUS, with files ending in .mus. These are combinations of a soundfont and midi data. The header is like struct MUS { // 2 * 16 uint32_t version; // 1 version? uint32_t subversion; // 3 subversion? uint32_t minorversion; // 32 minor version? uint32_...

Not sure if this was posted somewhere else, but for the Ratchet and Clank PAL disc, the cd/dvd filesystem only has the exectuable and config files in it. The actual data files are "Hidden" (not really). The actual files appear to be stored in some sort of sector table, LBA table would be a...