Sony Ericsson has rolled out its PlayNow arena, an over-the-air download service that will sell DRM-free music as well as games and applications.

The expanded mobile music service will go live in Sweden, Denmark, Finland and Norway on Aug. 25. Each country will have localized content in the relevant language.

The London based joint venture between Sony and Ericsson has secured the global rights to five million tracks. Universal Music Group is the only major not to sign up the service and the company says it is in discussions with UMG as well as 30 other labels.

Around one million tracks will be available from Aug. 25 in the Nordic markets with the rest to be added at a later date. Sony Ericsson says the service will launch in other European markets this year followed by Latin America and the Asia Pacific region in 2009.

In Sweden, full track downloads will cost 9 kronor ($1.42). In Finland, tracks will cost €0.99 ($1.46).

Sony Ericsson’s Walkman and MP3-enabled phones from the 2006 K800 model will be compatible with the service, a total of 25 handsets.

Customers will get a high quality DRM-free MP3 delivered to their computer and a protected lower quality file sent directly to their phone. The PlayNow arena can also be accessed via a computer and MP3 purchases could then be transferred to music players or other MP3-enabled devices.

PlayNow first launched in 2004 to provide polyphonic ringtones and later added mastertones, games and some full music tracks.