Hi, I did a search for this so I know that others have mentioned it...unfortunately all the results are from German users! I do not understand German well enough to make any sense of it.
Anyway I use Mp3ext to display mp3 bitrate info through the use of windows icons. Unfortunately I am unable to view these icons in the Mp3tag interface dialog...I only see a default windows icon.
I doubt Mp3ext source code will be implemented to fix this so maybe you could add a feature so that Mp3ext users could choose a default mp3 icon...or even write a quick patch.
Mp3tag is amazing by the way. It's really the only thing I could think of other than a way to add an .SFV file automatically the same way you would a .M3U.
If you use Mp3ext at all, you can get my theme here: http://www.deviantart.com/deviation/13820114/
I'll be updating this set as well as adding a new them in the future: both with full resolutions. Plus I plan on adding bonus packs to cover other formats such as APE, FLAC, MPC, OGG, etc...
Again, Mp3tag KICKS ASS!!!!! Nice to see freeware that totally walks all over anything else out there!