My Music folder is usually located in user profile directory. In Windows XP, this is located at [systemdrive]:Documents and SettingsloginidMy DocumentsMy Music
In case if you want to move this location to some other folder then you can do it by changing the below registry value.
Registry value: My Music
Path: HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerUser Shell Folders
Open registry editor and go to the node mentioned above path. Double click on ‘My Music’ entry in the right side pane and replace the existing data with the directory path of the new location where you want to store your music files.
It may need logoff and login to make the changes effective.