Important! This only applies to iTunes 10!
This is a tutorial on how to install Itunes easily on Ubuntu. If you have any questions just write it below in the comments section. I have made a part 2 that I recommend you watch. It covers syncing music onto music devices.
If you cant find it in the library just go to most downloaded and scroll down.
IMPORTANT: iTunes just updated to iTunes 11 and PlayOnLinux doesn't have iTunes 11 ready for linux yet. iTunes 10 is still in the library but you cant download the file from the official iTunes website. I put I link below to a page where you can download the iTunes 10 file. Use that for this tutorial and it should work fine.
Part 2: https://www.youtube.com/watch?v=i0pSlRElgcM
iTunes 10 download:http://www.oldapps.com/itunes.php?old_itunes=63