Hi. My daughter has a dsi and I have a Mac with tons of music on it. I need to get the music on the SD card and I'm having a terrible time. First of all, I converted the files, which I believe were MP3's or 4's because I purchased most of them from iTunes, into AAC files (no idea what that stands for but that's what I did, as suggested on a forum). Then, supposedly the next step is to be able to just drag them to the SD card and you're golden. Except in my case, it won't do it. With any of them. Not with them selected individually or as a package deal. And now I'm worried that I've messed them up with converting them....will I still be able to listen to them on my iPhone when I sync them over? Or is there now going to be an issue with that? Can someone please help me get this figured out so I can let my daughter listen to her music and so that I can be reassured my music is safe?? : )