I've used SCons for processing audio files recently and it has worked pretty well for me; multiple targets are handled just fine. I did have one percieved spee

I've used SCons for processing audio files recently and it has worked pretty well for me; multiple targets are handled just fine. I did have one percieved speed problem, but this scons calculating file checksums to see if it needed to re-build targets; this is usually a good thing, but if you're working with large files it might be better to use the MD5-timestamp Decider instead.