Bemused

"Bemused is a system which allows you to control your music collection from your phone, using Bluetooth. It requires a Series 60 or UIQ phone (e.g. Nokia 7650/3650, or Sony Ericsson P800/P900), and a PC with a Bluetooth adapter.

You can do the following with Bemused:

• Browse your music collection on your phone
• Play files in any format supported by Winamp - including MP3s, CDs, MIDIs, etc.
• Control Winamp versions 2, 3 and 5, Windows Media Player and PowerPoint Viewer
• Pause, stop, rewind, fast-forward etc.
• Add songs to the playlist and use shuffle and repeat
• Browse and select songs in your playlist
• Download songs to your phone (supported formats: WAV and MIDI; plus MP3 for UIQ)
• Customise the look of the system with skins

Best of all, Bemused is completely free software, released under the GNU General Public License."

You can get Bemused at bemused.sourceforge.net