I've been listening to Green Day, Nickelback, 3 Doors Down, Goo Goo Dolls, warm up/cool down with Jimmy Buffett.
I really need to get an Ipod right now just a regular CD player.
I find my hard part is to force myself on the treadmill, once I'm on I'm fine and then I switch off to the elleptical for 20-25 min and that breaks up the time.