Last.fm has today announced that it is the first website to offer free, global, on-demand access to the largest licensed catalogue of music from Universal Music Group, Sony/BMG, Warner and EMI, plus CD Baby, IODA, the Orchard, Naxos and more than 150,000 independent labels and artists. The service is ad supported, which means that they can implement the second part of their master plan: paying unsigned artists each time one of their tracks is played on the Last.fm service.