Keep begging for help on this.
Eventually found through a search of the boards some syntax that serves as a workaround. One version I modified is this:
[Media Type]=[Audio] [Genre]=[Classical] [Rating]=>=4 ~sort=Random ~limit=3,1,[album],[album artist (auto)] ~a
This pulls out three random classical albums with a rating of 4 or higher. Works OK and I may, in fact, just leave it as is. However, the one limitation is that it selects albums on which ANY track is 4+ and then expands it to the full album. Is there modified syntax that would limit the selection to only the 4+ tracks?
It's a common occurrence on classical albums that there's the piece you actually want to hear plus some filler pieces thrown in so customers won't complain that the album is too skimpy. Would like to screen out the filler.