The streaming internet radio battles continue with an announcement today by Rdio that it has launched a free internet radio service in the US, Canada and Australia today. Rdio recently inked a deal with radio station owner Cumulus Media, which will start bearing fruit with the new service, as Rdio's web radio player will feature ads sold by Cumulus Media.
The free Rdio app (also available for Android) will not play ads between songs, at least at the present time. Rdio is counting on hooking listeners with the free service, then getting them to sign up for a US$10 monthly subscription that will unlock the ability to select albums and songs directly.
The service competes directly with Apple's recently launched iTunes Radio, as well as established internet radio services Pandora and Spotify.