Following on the heels of its main rival Nokia, Sony Ericsson's allegedly also planning an unlimited music downloading service for its Walkman-branded cellphones. According to the Financial Times, Sony Ericsson is in discussions with all major labels about a rival tunes subscription service.

The company is purportedly hoping to announce its all-you-can-eat music product before the end of September, with a launch date in Europe before Christmas. Right now, Walkman phones function on a pay-per-track business model, with roughly 5 million un-DRM-ed songs available.

The music wars are heating up!

via Financial Times