Any thoughts on how to do this in Ruby?  I've tried hooking to the
dbPowerAmp DLL but there are problems that seem kinda inscrutable (see
message http://tinyurl.com/y9r86h). Too bad, because that's what I use
interactively, and it seems pretty good.

Any other ways to do audio conversions in Ruby that people recommend --
general-purpose conversion libraries for Windoze, scripting interfaces,
etc?  FLAC to MP3 is the one I most want, with flexibility in the MP3
parameters.  But it would be nice to have a bigger set of formats.

Thanks. --David.