I found this article on the Web today, and I was thinking to myself that it would be a nice feature to have on my Wii. Here is the article from www.ecbiz.co.uk:
Want to share the iTunes library on your PC, Mac, iPod from your Wii? Well, you can, thanks to a Wii-ware application called Dot Tunes. First, install Dot Tunes, then use the Wii's Opera browser to navigate to your collection and play audio. We are unable to determine whether this includes protected songs downloaded from the iTunes store - but never the less, it's still a pretty cool feature.