Hi Mr_B_,
If your device syncs automatically, the Player starts to sync every time you connect the device to a computer. If you want, you can turn this option off by doing the following:
1. Click the Start button, click All Programs, and then click Windows Media Player.
If the Player is currently open and you’re in Now Playing mode, click the Switch to Library button in the upper-right corner of the Player.
2. Click the Sync tab, click the Sync options button, and then click Set up sync.
3. In the Device Setup dialog box, clear the Sync this device automatically check box.
The next time you connect the device, you will need to sync manually
For further information, visit the below mentioned link:
http://windows.microsoft.com/en-US/windows7/Windows-Media-Player-sync-frequently-asked-questions
You may also refer the below mentioned link.
http://windows.microsoft.com/en-US/windows7/Set-up-a-device-to-sync-in-Windows-Media-Player
http://windows.microsoft.com/en-us/windows-vista/Prevent-CDs-and-DVDs-from-playing-automatically
Hope this information helped!
Thanks and regards,
Fouzan – Microsoft support.
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