added: flac verify; tak verify, eval. level and md5 options
added: TAC will auto. downmix to stereo if AAC-HEv2 is selected
Improved: Tag fields for APEv2
fixed: tak options weren't saved/loaded
fixed: extracted artworks weren't renamed
fixed: artwork couldn't be written if tags were disabled
fixed: TCDRipper couldn't grab UTF-8 tags
fixed: RG tags for APEv2 were written even if they were empty