Currently the scanner doesn't seem to recognize ALBUMARTIST or TRACKARTIST tags in cuesheets.  Consequently, ROLE values of 5 or 6 are never added to the contributor_album or contributor_track tables for audio files tagged solely with cuesheet data (or referenced in external cuesheets).

More importantly, a ALBUMARTIST value is already implicit in cuesheets: the 1st PERFORMER tag, which precedes any TRACK records can be interpreted as an ALBUMARTIST value.  At least one popular audio program, Foobar2k, interprets cuesheets in exactly this way.

While failing to interpret the album-level PERFORMER tag as an ALBUMARTIST in non-various artists albums leads to no ill effects, in VA albums there are side-effects.  Some artist values which normally would show up in the all-artists query, do, in fact, get dropped, since they don't get a role==5 record.

Specific enhancement request:

1). Make the cuesheet scanner code recognize:

REM ALBUMARTIST "xxxx"

..and..

REM TRACKARTIST "xxx"

..tags.

2). For any VA cuesheet (i.e. any cuesheet with more than 1 PERFORMER value) and lacking a specific ALBUMARTIST tag: interpret the 1st PERFORMER value (before any defined TRACKs) as an ALBUMARTIST value and add the appropriate role==5 record to the contributor_album table.