A.) Uninstall Bearshare 6 from your computer completely.
(You must uninstall Bearshare before completing the later steps)

How to uninstall Bearshare 6?
Click 'Start' -> 'Programs' -> 'Bearshare 6' -> 'Uninstall'

B.) Renaming your DRM folder in Windows XP and Windows 2000

First, show the hidden files and folders option in Windows:

1. Open My Computer.
2. Click Tools -> Folder Options.
3. From the Folder Options window, click the View tab, and select the Show hidden files and folders button.
4. Next, uncheck the Hide protected operating system files (Recommended) box.
5. Click Apply, Then click OK.

Next, find and rename the DRM folder on your hard disk drive:

1. Shut Down Bearshare 6
2. Open My Computer.
3. Open the C: drive
4. Open the Documents and Settings folder.
5. Open the All Users folder.
6. Right-click the DRM folder, and then click Rename.
7. Type drmbackup, then press ENTER.
8. Close down all the windows
9. Restart your computer.
10. Once your computer is back on, launch Windows Media Player , then close it.

Install Bearshare 6 from www.Bearshare.com and try to play your Bearshare music in Bearshare.

It works. If anyone needs help let me know.