Yes, the codec is determined by the header: http://wiki.multimedia.cx/index.php?tit ... _Arts_SCxl
As I already said, either they keep the header in a different file or they use a common, predefined format for all sounds.

Yeah, there's no real file format to figure out. You need to know the codec and the parameters to get along.
But thanks for your offer, we need programmers here

btw: used to C++? Try D!

updated to v1.0

To finish this: (code is not tested) GetDString magic 4 0; If magic <> "PAK_"; CleanExit; EndIf; Get Dummy Long 0; Get numFiles Long 0; Get Dummy Long 0; For i = 1 to numFiles; GetDString filename 64 0; Get Dummy Long 0; Get timestamp Long 0; Get offset Long 0; Get size Long 0; Get Dummy L...

You can at least extract the entries with valid offsets and sizes.
Somebody just needs to write a BMS. I don't have time for that.

char magic[4]; // PAK_ uint version; // ?, =1 uint numFiles; uint uk; struct Entry { char name[64]; uint uk1; // 1 or 33 time_t timestamp; uint offset; uint size1; uint flags<format=hex>; // ? uint size2; // guess the 2 sizes are compressed size and uncompressed size, but I haven't seen any compres...

Good old OllyDbg
And sometimes I use IDA for disassembling, but I'm not very experienced in using this tool. Thus I only use basic functions, mainly the graphical view.

Not sure, but since there is no magic ID, I probably set a breakpoint on CreateFile and ReadFile trying to get to the memory address where the texture data resides. Then I set a "breakpoint on access" on the data. But IIRC it didn't break. Maybe they pass the compressed texture to the grap...

Of course I already tried that, but it's hard to find the algorithm. Haven't had any luck yet.
Maybe I'll give it another try when I have my 2nd monitor (if I ever manage to buy a new one).

And the code is quite tied to the ffmpeg library.

That is the problem, no tools can support can support this yet until someone figures out how the stream system works. It needs the headers, but adding a simple SCHII header won't do it either because it needs the additonal SCCI info and all that. So its complicated for that. Well, SCCI and SCDI are...

Well what about the tools created for previous games, shouldn't it be easy for their developers to support this game as well?

Well if you knew which codec is used, you could probably convert it. Did you try any tools?

Good job!