[internet archive addon] Is invading my music library

Hi there,

I have a problem with the "internet archive" addon running ubuntu 12.04 and xbmc 12.2.

Since I installed it, there are appearing more and more "internet archive" podcasts in my music library. I already (1) removed the plugin (2) removed my music sources (3) reviewed the addon data folder and (4) "cleaned" over settings->music my music library but still there are these podcasts in my library.

How can I remove them?

Best regards.