[ShaolinFlame]

Itunes has a huge selection of columns, all of which can be sorted.

You could have just activated the 'Filetype' column, sorted in, and boom; all your m4as in a row, then all of your mp3s in a row. If your last sort was artist, then that should still be intact as well (past the filetype sorting).

I love itunes for it's accessibility, sortability, and good indexing. But it is god awful when it comes to destroying my system resources.