This occurs when too many folders are placed on the device with Windows Media Player. To resolve, please follow these steps:
To resolve the issue:
1. Connect the player to the PC using the USB cable.
2. Open Windows Media Player.
3. Go to the Sync or Devices tab and delete all content from the player.
4. Go to the Tools menu and select Options.
5. Select the Devices tab, highlight the ILO or Siren player and click on Properties.
6. Uncheck the box "Create Folder Hierarchy on Device"
Now, when music is transferred, it will be placed in the root directory of the flash memory disregarding the folder structure and allowing all tracks to be seen.
Phraug Lieber, February 2006