I have a big problem right now. Anytime I download an album with multiple artists, it ends up split amongst folders for each artist. For instance, a 6-CD collection - "Songs For Reggae Lovers" - has produced 180 folders, each containing a single album and (usually) a single song.
Probably not much you can do about that. The files just aren't tagged the way you want them to be tagged, which is what bindings like {album} are based on.
For music files, it's best to use MusicBrainz Picard to manually tag files correctly to make sure the ID3 tags match the way you want things to be organized.