YouTube has stacks and stacks of music videos on their website. I have written an OS X widget called iTube. iTube gets the artist and title of the song you are playing in iTunes. It then performs a search on youtube and plays the first hit in the widget window. Once installed iTube works by itself in the background, so start a song up iTunes then check your dashboard and with a little luck you'll be watching what you are listening to.
Subscribe for our newsletter with best Mac offers from MacUpdate.