I'm not sure if this would work or if they make one for the Wii but...Originally Posted by yon2501
there is a device called the R4 Revolution made for the Nintendo DS and DS Lite that supply's the codec to play games and other media content that you download from your computer and store on an SD card. you simply drag and drop almost any media file type (game, movie, MP3, even home made games) to any sized SD card through an SD card reader, then you insert the soft ware (it is designed to fit right into the game slot and looks like any other DS game). This supplys the Nintendo codec that unlcoks the ability to view, listen, and play downloaded media.
check out my post in the "Must Haves!" thread for info from the site I got mine on. I dont want to repost it here cuz people will start accusing me of being a spammer.
hope this is useful to someone...