So Im seriously getting into building up my iTunes library from my CD collection, and I'm wondering if anyone can answer the following for me.. Basically I want to know if iTunes can list the same track under different albums without the need to duplicate the file and take up memory space.. So for example, I hypothetically have all the full studio albums Christina Aguilera has released in my iTunes (hypothetically of course!..) and I now want to add her recently brought out Greatest Hits CD, is it possible to compile the GH from the relevant tracks from her other albums along with the new material so that her Greatest Hits appears alongside all the other albums in my iTunes BUT without duplicating the songs, so like utilising a shortcut or something from the Greatest Hits to the relevant song on the relevant album.. Does that make sense? Another example, again hypothetically using Christina Aguilera is for her song 'Nobody Wants To Be Lonely' with Ricky Martin.. Is it possible to have the song listed under both artists, but again without duplicating the file twice and taking up memory space.. So a similar situation just across artists instead of across albums.. If anyone gets what the hell I'm on about, is there anyway to do this in iTunes?.. Regards A definitely not Christina fan!..