Ripping PS2 Game's In-game Muisc
 

I went around the forums here but I didn't find much help on how to rip PS2 games music. Specifically "Samurai Western", "Grandia Xtreme", and "Drakengard 2", with music file extensions ".trs", ".se", but I cannot find the extension files for Drakengard 2.

I do not have any sound card that allows me to input extra cables and whatnot to do a manually record (just onboard sound) so I would have to use some extracting program. Any ideas would be appreciated.

I actually tried using a program called PSound but it did not work for me, all I got was garbled audio output of the music files.

That can be easily fixed by buying one. An investment of about 20$ (Terratec Aureon for instance) plus another 5$ for the cable.