I have observed unexpected results with tagz in v0.9b/RC: variables with similar names get mixed up. Specifically, %discnumber% is displayed instead of %disc%. Consider the following example:
ALBUM = Anthology of American Folk Music
DISCNUMBER = 1
DISC = Ballads
tagz string (oversimplified for clarity): "%album% - Disc %discnumber%: %disc%"
As expected, v0.8.3 returns "Anthology of American Folk Music - Disc 1: Ballads". However, v0.9 RC returns "Anthology of American Folk Music - Disc 1: 1".
Also (and I hope this is related), if there is no %album artist% tag present, v0.9 returns the value for %artist% for the tagz string "%album artist%" instead of "?".
My personal solution to this problem is to avoid fancy tagging. Thanks for making a great program even better.
rdS