[ironic_monkey]

the problem is that idiot software keeps littering dsf files with id3 tags. ffmpeg does the aiff tags, but lots of shit does not use those and append the id3 blobs instead. taglib is much better at those, than the basic ffmpeg tag class i did, so it's not entirely obvious which way to go about this. as evidenced by your call to taglib on a dsf files - the replay gain info sits in a id3 tag :/