One of our readers was facing this problem that even after changing the file association for some file the file showed different icon image.
Despite changing the file association for the song file from windows media player to VLC player, his song file showed the same icon image as linked with the Windows media player. Normally the icon gets refreshed after a reboot but if it is still not getting set to the updated icon then perform the steps below (for Win Vista and Win 7):
• Click Start, Default Programs
• Click Set your default programs
• Select your web browser, email client or any other item in the list.