"Windows Media Player 10 is being refined to provide a great experience for discovering, playing, and taking your digital media anywhere. We are still in the early stages, but this technical beta lays the groundwork for the great end-to-end digital media experience coming with the final release for Windows XP."
Microsoft has released a beta version of the upcoming WMP 10. Besides a sleek new design, version 10 will offer a new
Auto-Sync feature. This will allow you to keep fresh content on your portable device (read Smartphone) without having to manually transfer files every time. Auto-Sync will only transfer files that match certain parameters like most listened to, or recently downloaded pictures. There is some early feedback that the Auto-Sync doesn't work to a storage card. Hopefully this is just a small bug and can be fixed before the final release.
Be warned, this is a beta application. Installation of this may cause problems with your computer. If you feel the need to try it out, make sure you do a backup first.