my collection contains a multitude of unique records such as live shows, very small bands without a label, demo tapes, mixtapes, etc. that aren't available (and probably shouldn't be) in the MusicBrainz database.  I would like to be able to touch a file in the album folder (example ".ignore") and/or a specific ID3 tag that will cause Picard to skip it.  because my collection is large I sometimes miss the false positive matches and my files are renamed/moved/tagged with incorrect info.

specific example would be I have a Pixies recording from their Doolittle tour (they burned and sold records on-site the night of the concert) and Picard will match this with a studio album release.  I would like to tag these in some way to have Picard skip them entirely when loading data to analyze.

thanks.