m4a2mp3 – convert AAC to MP3. Uses Perl, LAME and faad. Semi-gracefully converts weird iTunes genres to ID3v2, or to “Other” if it’s something else. Uses lame’s new VBR settings, so you end up with an MP3 not massively bigger than the source M4A.
PS: broke the 8000 tunes on the Firefly server …