I’m going to add myself as a “me too” voice to this thread, though I’m more interested in the ability to edit AIFF files with embedded ID3 tags (as opposed to whatever other native tag format one might use with AIFF).
The format is pretty simple, you just stick an IFF header with the type "ID3 " (that’s a space at the end) at the very end of the AIFF, which encapsulates the exact same style of ID3 data that you’d normally prepend to the start of an MP3 file. The most difficult part is recomputing the length of the FORM header at the very start of the file, which is pretty much a walk in the park compared to dealing with those “synch-safe” integers that ID3 uses.
It may sound strange, but I’m also interested in Jaikoz having the capability of editing files that are JUST ID3 tags (with no attached audio whatsoever).