Proper support for non-ELF/gcc systems (using libtool or autoconf)

Rewrite the xmms preferences stuff (it's really nasty right now, being
largely a bad Glade hack)

Make it possible to close the monitor window from the WM

Extend logic beyond 16-bit native-endian signed

aRts plugin (should be easy)

Better encapsulate the library in order to provide multiple compressor
objects (e.g. CreateCompressor(), CompressorCfg(), etc), possibly
making the preferences a public struct

Possibly add band limiting?  This would introduce some other issues,
though, like actually keeping track of how many channels there are...

Figure out why on some sound hardware, ESD filters hang up (even
though it's not technically a problem with AudioCompress)