This is what I think the Ouran High School Host Club listen to on their iPods!

Songs:
Sakura Kiss - Chieco Kawabe
Knights of Cydonia - Muse
High School Never Ends - Bowling for Soup
Love Love Shine - Kosaka Riyu
Girls Just Want To Have Fun - Cindy Lauper
Thomas the Tank Engine vs 50 Cent - 50 Cent and Thomas the Tank Engine
In The Shasows - The Rasmus
If You Were Gay - Rod and Nicky (Avenue Q)
Walk This Way - Aerosmith & Run-D.M.C
Our Velocity - Maxïmo Park
Shissou - LAST ALLIANCE