Salling also replaces your 2.x ID3 tags with 1.x tags. If you have any tracks where the Album Artist tag is Various Artists (like for a soundtrack) then the Artist tag is changed to Various Artists. But seemingly if you have a tribute or collaborative CD that belongs under a single artist (like the Nativity in Black series could have an Album Artist of Black Sabbath, or Thievery Corporation's Outernational Sound every track has a different artist) those files are spread out on the sdcard under the individual artists as <Artist>/<Album>, and the Music app doesn't group them into a single album (it shows each track as an album, as the Music app groups a directory of files as a single album, rather than properly using the tag information from the files). Unless of course you have the Compilation tag set, then it seems to keep them under Compilations/<Album>.
Salling has pretty much the exact UI and workflow that a lot of people want, but then it tries to Lowest Common Denominator dumb to support as many devices as possible and totally ruins it, leading people to blame the Android Music app(s), which share blame for poor support of the Album Artist tag but don't deserve the ire of Salling Media Sync users.