The entrepreneur dynamic duo Janus Friis with Niklas Zennström has officially launched the Rdio service to the public. You may remember Janus and Niklas as the two who started KaZaa, Skype, and Joost. Up until today, you needed an invitation to use the service. The music streaming service starts at a cost of $4.99 per month. However the service is currently open to users in the U.S. and Canada.
There is a 3 day trial that is advertisement free too. The web only version of the service is $4.99, but if you want to use the service on a mobile device — it costs $9.99 per month. Rdio has about 7 million songs in their database after working with several independent labels. Rdio has agreements in place with IODA, Iris, INgrooves, Finetunes, and The Orchard.