Last.fm Records: Using Group Feed Instead of User Feed

What it says on the tin.

Anyone have a way to get last.fm records working with group feeds? Or is there another plugin that will do this?

All I need is weekly group stats for albums or artists, and an accompanying image for the sidebar.

If it helps, group feeds are constructed like so:

http://ws.audioscrobbler.com/2.0/?method=group.getweeklyalbumchart&group=mnml&api_key=b25b959554ed76058ac220b7b2e0a026

Any gurus out there know a way to make it happen? I have no problem getting down and dirty with themes, but my php skills are just about limited to find and replace. 🙂

Any info is appreciated. Thanks!