create different libraries based on excluding some artists/genres?

[simoncn]

Regarding making multiple libraries based on Genre tags: you can use the tagUpdate facility to do this. Your tagUpdate file would look something like this:

@GENRE=something we both like
+LIBRARY=User1
+LIBRARY=User2
@GENRE=something else we both like
+LIBRARY=User1
+LIBRARY=User2
....
@GENRE=something only User1 likes
+LIBRARY=User1
@GENRE=something else only User1 likes
+LIBRARY=User1
....
@GENRE=something only User2 likes
+LIBRARY=User2
@GENRE=something else only User2 likes
+LIBRARY=User2
....

Regarding the warnings for the Decade filter: if you have Decade.decade.index in the tagOptions property, changing this to Decade.decade.index.sort should fix the problem.