After MUP (netlabelism.net & Netwaves) did some talks with officials from Saïd El Khadraoui's (Sp.a) department, the latter has posed a question at the European Commission about the "equitable remuneration" and Creative Commons music. The Commission answered that an artist is free to reject the equitable remuneration. This means one does not have to pay this equitable remuneration when he gives a party with Creative Commons music. (Performer only needs to be the composer, but this is true for most of CC music). Check out the Websaid from Saïd (Dutch).
Read the question from Saïd, and read the answer from McCreevy (on behalf of the Commission).