Mas Storage SYnchronizer s a Windows-based iTunes Add-on that adapts iTunes for the Palm Treo 600 and 650, as well as other Palm handhelds that support RealPlayer, Pocket Tunes, or Busker MP3.

You can use Mass Storage Synchronizer with an SD/MMC card reader, or by using the third party app Card Export II for Palm OS.

upported audio players: RealPlayer for Palm, Pocket Tunes and Busker MP3.
Supported Palms: Any Palm compatible with the audio players above.
(Please ensure there's no root folder labelled 'Audio' in your PC)

With an SD/MMC Card Reader
1. Remove the SD/MMC card from the Treo
2. Insert card into an SD/MMC card reader
3. Edit your songs on the 'Treo smartphone' iTunes playlist
4. Run 'Mass Storage Synchronizer'
5. The songs in the playlist will be synced to the card
6. Put the SD/MMC card back into the Treo


With Softick Card Export II for Palm OS
1. Insert your Palm into cradle or connect to USB cable
2. Run Card Export II application
3. Tap "Connect to Desktop" button
4. SD/MMC card will be mounted as a logical disk
5. Edit your songs on the 'Treo smartphone' iTunes playlist
6. Run 'Mass Storage Synchronizer'
7. The songs in the playlist will be synced to the SD card
8. Disconnect

http://www.teavuihuang.com/massstorsync/