I know others have touched on the MP3 to AAC thing. But I want to know why. Personally, I think it sucks. Doing this is like nVidia disabling DirectX9 on my 8800GTX. Where do they get off making this decision for us? This is one of those changes which makes people think it's motivated by money. AAC playback is not free. It's licensed and royalties have to be paid to Apple. So I have to ask, what is Nintendo getting from Apple for doing this? I am not going to convert all my MP3 (yes they're legal versions of my 200 CDs) over to AAC. I never had a problem with MP3 playback, so why should I convert.