I use foobar and also itunes and have no problems/issues. The only adjustment I have to make is to use the ID3v2 compatiblility switch in the preferences/advanced within fb2k when I create mp3 files from within fb2k(lame). And even this is only to keep "boxes" from showing up at the end of artist, song, and album names within itunes listings. Otherwise, I notice no tagging problems. You can have soundcheck info from itunes coexisting peacefully with realplay gain info. They use different tag fields....
QUOTE(foosion @ Oct 25 2006, 16:45)

QUOTE(Ken-chan @ Oct 25 2006, 22:23)

We will NEVER help you with THAT!
Seems like a case of
pluralis majestatis.
bsommer: Tagging compatibility of recent versions with iTunes are discussed in a few threads and shouldn't be hard to find (I hope). If nothing else helps, there's a switch for ID3v2 compatibility mode in advanced preferences (the one with the scary warning). Sorry for not being more specific, but I didn't have much time reccently to keep track of all these things in detail.