Is there a way to compare my iTunes library with the iTunes Store's library, so I can find what songs I'm missing by a particular artist? Ideally, I would be able to compare the Store and my Library by Song Title, Artist or Album name.

I did this manually recently to see what Beatles songs I was missing. It took a lot of time and printed pages of my iTunes Library just to find the names of the 7 songs that I needed. There must be some easy way to let the computer do the search and comparison.