PS2: The background music of One Piece: Round The Land

Even if it's a ten-year-old PS2 game it's still a special game about the famous Japanese anime series One Piece. It also contains interesting background music - so let's get the sound!

I have the European edition of the game (One Piece: Round The Land (2004)). If you look at the root of the disc, you'll see the following folders:

The root folder of the PS2 disc

In the folder 'BGM' you'll find the subfolders '00', '01' and '02' which all contain the whole background music from the video game. But they are in the file format *.int. Int stands for PS2 RAW Interleaved Format.  

You can listen to the music with using the BZR Player. That's a music player for a lot of video game music formats as you can see in this list. But while running a playlist of songs it often happens that the program is ending up with "Not responding". But at least the songs are played correctly.

Attempts with using the tools MFAudio and PSound to convert the int-files into proper wav files failed - they sound similar, but not as good and correct as with BZR Player.

So any tool which is able to record the system sound (such as Free Audio Recorder) while playing the soundtrack with the BZR Player would be the only solution I can currently offer.

But if you know it better you can of course tell me in the comments.