I have what I think is a pretty cool idea for a plugin. Something I was going to write up for iTunes, but it would actually work better in MC anyhow, given MC allows the user to make custom library fields and view them nicely in various view schemes.
The plugin would harvest last.fm for all the tag information for all your songs and add them to a list data field for each song (called lastfm perhaps).
Amazon also has a nice web services interface, so I'm thinking some useful info might be available for scavaging there too.
Then there is Discogs.
Any or all of these services could be used.
I'm not sure if it would be best to display the data together or seperately. Perhaps a cool view scheme could be made with the panes "last.fm tags", "discogs genres", and "amazon tags".
Of course, the ultimate web services plugin would harvest the allmusic site, but they have no product to sell, and hence are kind of stingy with their data.
Anyway... I'm curious if anyone has done something like this already?
If not, does it sound interesting?
It could probably be done in javascript, though I'd like to brush up/learn some C# anyhow.