This is the PS2 Japanese version. I suppose the Director's Cut edition is almost the same.
In DAT.BIN, music should be found from entry #2421 to #2435, from #3855 to #3865, from #3954 to #4002, and from #10457 to #10483. Force PSound to play them at 48kHz, to make them sound correctly. Unfortunately, no loop point feature.
Still in DAT.BIN, from entry #4003 to #10430, and from #12213 to the end, you should find event voices, and they should be played at 32kHz, fyi.