well it takes around 10 minutes for the game to load for me as well. but that's not the problem, the problem is that the game just randomly hangs whilst scrolling through the track list!
I have tried using this method. However when I start the game, it says that 'Downloadable content has to be moved to the SD card'. And its a really really slow process.
If I remove the SD card before the game begins, I can play everything just fine.