Surprisingly, MusicMatch has a great interface for this in it's library. You can sort by anything stored in the id3 (v1 or v2) tag. You can load whole albums and mass edit them (very helpful when you want to assign the year to multiple tracks off the same album). Just a nice way to keep track of your tags and edit where there are problems. I found it also helps whenI miss type titles (NEw Order and New Order come up as seperate artists so I can make the artists consistant across ID3 tags).