While not quite transforming your Treo or a number of SonyEricsson phones (and some PDA’s) into a true iTunes phone, Mass Storage Synchronizer will indeed sync your music from iTunes to your device as easy as you do your iPod…or ROKR.

Mass Storage Synchronizer is an Windows-based iTunes Add-on for Sony Ericsson Walkman Phones, Sony Clie PDA and Sony Ericsson P900/P910 Smartphone (Sony Devices). Sony Ericsson Walkman Phones presently include the w800, w600 and w550. Not unlike the Motorola ROKR, this add-on enables Walkman phones to be a virtual iTunes Mobile. This combination of iTunes and Mass Storage Synchronizer allows Sony Walkman Phone users to use iTunes to manage their songs, and sync/update the songs to the phone. It can used in place of the bundled Disc2Phone. [Source]

Tags: treo, itunes, mass storage synchronizer