"The Pessimist" is on the soundtrack of Transformers: Dark of the Moon as an iTunes exclusive track.

"Carry On (iTunes exclusive track, only available with pre-order)"

Macworld has a neat how-to on adding your own lyrics to iTunes tracks.

Each notification provides some information, such as: "Download finished," or the name of the current iTunes track.

"Kill an Addict" and "Filth" were iTunes exclusive tracks for the special edition of Hatebreed's self-titled album in 2009.

Napster Mobile and iTunes use different, incompatible systems, so you won't be able to hear your iTunes tracks.

German digital download (Bonus iTunes tracks)

Without wide device support, 24-bit iTunes tracks make little sense.

Andrew Tolman - drums (tracks 3, 6; iTunes deluxe tracks 16, 17, 18)

The Best Buy exclusive download referenced above is an entirely new recording of "Fallen Man" and not the same as the iTunes track.