I have ~1000 CD ripped as FLAC and am trying to resolve some tagging issues.

In SC if I view Bob Dylan, for instance, there are a dozen discs, including some compilation albums on which he contributed one or two tracks (e.g. Wonder Boys soundtrack). All fine. I can live with this.

On the controller these same dozen discs appear PLUS another dozen discs on which a single Bob Dylan tune is covered by another artist (e.g Joan Osborne or Robyn Hitchcock). The Tags (I use MP3Tag)show Bob Dylan as the COMPOSER for this tune, but the ARTIST tag is clearly the artist covering the Dylan tune. These are not compilation albums, nor are they marked as such.

This situation exists for many other artists in the Controller view, but not the SC view. How do I solve this?