Yeah, that's the best bet. The internal PinMAME32 sound controller/recorder can sometimes be a real son of a bitch to handle, recognizing one press of F5 as two presses (i.E: start recording and instantly stop recording). It doesn't show that it's recording, so I wait 1 or 2 minutes and stop the recording (starting it in the process). If you wanted to get sounds, go with Audacity, although PinMAME32 still is a must, just for the sound controller. Press F4 or F6, I forget, to change into the controller mode. Then press DELETE to change into manual mode, since the organized mode was a nice addition, but barely worked out. There you have a ton of zeroes, just put a 1 in at the end and press ENTER. You now have started the first sound in the ROM, just most of the times that's empty. So keep working forward and don't forget that A to F count as digits too. When you hit 0000000f, go to 00000010 and so on. If you hit 100 at the end, you can usually stop, I don't think that much new stuff will come.
So that was my trade in a nutshell.
The McD