How do I delete artwork and sort by more than one column?

The answer to your first question is if you highlight your entire music library (control-A), then right-click anywhere that's highlighted, selecting Clear Downloaded Artwork should remove I think (though I havn't actually tried it on my library).

Don't know about your second question.

1. The answer above will work if the artwork has been downloaded from the iTunes store. If the files have embedded artwork then you can select the files, Get Info, and on the Info tab, put a tick against the empty white artwork box. Click OK and all artwork, embedded or otherwise will be removed. Rather than work with the whole library use a smart playlist with the rule *Has artwork is true*.

2. No. iTunes doesn't give you a feature to sort columns on one value, then sub-sort on another. Many of the built-in column sorts do work in a multi-valued way however. For example the Album by Artist ordering looks something like this in pseudo-SQL:

SELECT * FROM Tracks ORDER BY Sort Album Artist, Sort Album, Disc # (Empties Last), Track # (Empties Last)
+Where there is no Sort Album Artist value it is infered from Album Artist, Sort Artist or Artist. Where there is no Sort Album it is infered from Album.+

tt2

iTunes has two ways of attaching artwork to files. If you have an iTunes account and give it permission (or rather don't get around to removing the default permission) it can download artwork for tracks you rip from CDs provided it can identify them and match with artwork from the store. This type of art is only stored in a local cache and not embedded in the files. Regular artwork pasted into the art boxes, either the selected item panel or one in Get Info, get embedded in the file and cached locally.

The *Has artwork* rule is new, last build or 3...

Using Grouping in this way is quite a good idea. It uses the same field that in other players is called Mood or Subgenre. I use it for tagging files for smart playlists, mainly to control which of my family has which music on their devices. You probably know that you can select Grouping as one of the fields displayed in the column browser, if not you do now.

I'd like a *Smart Playlist++* that would let us access the raw SQL and control ordering as well as selection. I doubt it will happen though.

tt2