Alright, so it isn't a plugin. As far as I know, MOC doesn't have a plugin structure... Or perhaps it does, but I haven't looked at it. :o/

Anyway -- I faced the problem of liking MOC, but wanting to submit the feed of which songs I listen to Last.fm. other people are able to do it with other players, which have their respective plugins. After searching a bit (not much) I decided to write my own, in Python. It was easy.

I used lastfmsubmitd to handle the interface with the last.fm protocol, and the rest was really easy -- just opening MOC from time to time and asking it which song it is playing.

Of course, it would be nicer if one could execute a program on song change. Is this possible?

Anyway, I thought this might be useful for someone out there, so I am posting here the link to the program.