FLAC: Album Artist not working correctly - or at all really

We use our squeeze ecosystem for all things except local music (I use Jriver to listen to my collection at work, Pandora and Spotify at home almost exclusively). I recently got a Touch and set up a listening station so I'm getting around to setting up my music library in LMS finally.

I can't get Album Artist to work at all with my FLAC files. See attached for an example file as it shows in MP3Tag - as you can see I have ALBUMARTIST, ALBUM ARTIST, and ALBUMARTISTSORT all filled out with "The Beatles" for this particular song. But when I go to browse I don't see "The Beatles" in my list!




Interestingly, I have some FLAC files that have NO AlbumArtist tag at all and those actually DO show up when I browse by Album Artist on LMS. See screenshot of where I'm getting Frank Sinatra and my Elton John songs, even though those FLAC files only have ARTIST tag filled in.

I have "Treat TPE2 MP3 Tag as Album Artist" marked (but that only matters for MP3, right?) and I have Browse Artists set to as "Use two separate lists for Album Artists and All Artists" in the drop down.

Any ideas what I'm missing here? I would expect it to work the opposite of this!

Attached Images