Personally, I would run them through the ww2ogg.exe program (see above posts), and see what happens. Maybe you'll get lucky, and it'll simply work! If that doesn't work, then it sounds to me like your other best option would be to use VGMToolBox, and extract each RIFF segment from the original "Saboteur.pck" file. Unfortunately, I've never used VGMToolBox, so I couldn't tell you how to use that to extract the RIFF stuffs.
Also, yes, you've extracted the files from the "Saboteur.pck" file. The *.BKH extension is either what the *.PCK file said it contains, or it's the extension that the QuickBMS script used when it extracted the files. Either way, as near as I can tell, it sounds like it worked as expected (I've never used QuickBMS, but I know what it is, and it sounds like it worked, as far as I know). Now that you have the files, the ww2ogg.exe needs you to send it the data. The problem (as it sounds to me) is that the data that ww2ogg.exe expects to see isn't necessarily the first thing the the *.BKH files. Thus, when ww2ogg.exe loads the file, it may see data it doesn't recognize, and just kick it out.
As HCS said, if that's the case, you're going to need to know the offsets so that you can feed the correct data to ww2ogg.exe, thus allowing it to skip the data it doesn't recognize. If you're lucky though, the "expected data" that ww2ogg.exe is looking for might already be at the front of the file. If that's the case, then simply running the *.BKH files through ww2ogg.exe should work (again, see above posts).
If, however, the expected data isn't first, ww2ogg.exe won't work, and you won't get an error message (I don't think). You'll just get no new files. If that happens, then you can do one of two things. 1) find the necessary offsets (in the *.BKH files), figure out how to use a command-line tool, and feed ww2ogg.exe the necessary offsets. Or 2) Use VGMToolBox to extract only the RIFF data. The resulting files should easily "feed" into ww2ogg.exe using the methods listed in the posts above.
Personally, the VGMToolBox should be the easier of the 2 methods to figure out. There's likely already a "plugin" in place that helps VGMToolBox extract the RIFF data. The hard part then, is figuring out how to use VGMToolBox's extraction plugins.
Hopefully this has been helpful, and hopefully one of these methods works for you (the "do it now" method, or failing that, the VGMToolBox method are the recommended attempts). Mouser X over and out.
VGMToolBox by Masherdude at 7:56 PM EDT on April 12, 2010
Hmmm, i have tried dragging my BKH files into ww2ogg08 using the --full setup method but nothing comes up. All i get is a black box flash up and go. If thats the case. I would go for the VGMToolBox method but i have no clue how to use it. I looked at it and had no clue of how to get the RIFF from the files.
I am surprised at how complicated this process is.
So now that i've done it with that game. Could i do this process with QuickBMS with any game file aslong as i had the script? So for instance if i wanted to extract the call of duty 4 .ff sound files using QuickBMS ? Is this possible if i had a script? And then to run it through ww2ogg ? Or is this file not compatible?
It's a completely different system. However, you should be able to rip it. Check out the XeNTaX thread. It seems that you just need to use offzip to decompress the .ff files, and the music ones have normal MP3 inside.