I also have Switch but haven't used it yet. Just to correct something I said earlier. There is a way you can get wma files to play in iTunes after all. See Mac HElp? How I can open zip and wma files on my iMac?. But you will need QuickTime Pro in order for this to work. Besides, despite the description, if you have QT Pro you should be able to convert the audio file within it instead whilst using that extra plug-in. I have that plug-in but haven't tried the conversion to another format yet. Only for playback.