I was doing memory management on my PS2 one day and I put Castlevania Symphony of the Night in the drive and I noticed a CD Playback menu option appear in the bottom right corner of the PS2 Browser, so I played it, kinda neat techno remix of Castlevania music. Aside from a few demo discs I haven't found any other PSOne games that have extra audio tracks. Does anyone know of a list of games that have bonus audio tracks like this one?