iTunes Library Movable Type Plugin
No single utility has yet integrated it with the simplicity of a "Browse" button...
Someone needs to implement a Movable Type plugin that imports the iTunes Library XML file and provides tags to output smart playlists, artist listings, album listings, etc, with links to either Amazon's or Apple's iTunes Store API. I suspect the percentage of Movable Type users that own and love iPod + iTunes is high, and that the market for this plugin would be vast, immediate, and overwhelmingly appreciative.
There are a variety of one-off utilities that have been implemented to do this on different levels, but no single utility has yet integrated it with the simplicity of a "Browse" button for the XML file, and a set of Movable Type tags to display the results.
If it isn't created within the next six months, I may take it upon myself to do it.