they need to get itunes, itunes store, and itunes match working right first. the whole "it just works" thing has not been true for so long now. just today the mobile itunes store was making me want to punch babies because it took almost 5min to load my "purchased" list on my iphone. this is not downloading the list, mind you. this is just so i could look at it. sheesh. the reasons why i fell in love with apple are starting to stretch thin.
What device and iOS version are you on?? My iPad 1 and iPod Touch 4th gen take time to load content in the music app. This has to do with slower processors and ram. My iPad 4 and iPhone 5 load instantly with no issue.