customizing arena music

Hi! Anyhow on where this feature located in the game? Ive been looking for it in the menu, but I can't find where I can upload my arena music file?

Thanks!

it is only available on the 360 version of the game

however, the method of doing custom soundtracks and such should still work, the tutorial is in the 2k9 tutorials section

I see, i didn't know that. Thanks man!