It wasn't an oversight. They wanted to focus on showcasing remixed music instead of just using ripped songs like the past 3 all stars games. If you want your own music, the Xbox has custom music. --- http://backloggery.com/SetnaroX "Proper sound shatters glass. Proper sound shatters the Universe."
guys Im pretty sure he's asking if tere is a way to listen to all the music without having to play the specific stage AKA a soundtest.
Unfortunately there isnt an option for that but you can probably find these music tracks on youtube or maybe a soundtrack rip elseware on the interwebs. --- A 2006 study concluded that 82% of people who don't know what they're talking about use false statistics.