Hello everyone i found out some interesting info(peeps with ds rumble pack already know this) but when you insert where your ds would say:start GBA game, it says: ds option pack has been inserted. see for your self at: http://media.ds.ign.com/articles/659/659378/img_3153058.html Any who im just saying if you don't want to hack your ds and stuff with xtreme ds. Maybe nintendo will make cartridges that do the samw thing but for a lesser price.(mp3, movie etc...) Imagine the posibilities. maybe there will be a music setting where u can listen to your playlist while playing MPH. that would be cool just a thought. if you know anything about this thing being a true fact tell me!