Notes about the WLMP file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The WLMP file type is primarily associated with 'Movie Maker' by Microsoft Corporation.
Use Movie Maker beta to create movies from your pictures and video clips, and share them with your friends and family.
WLMP = Windows Live Movie Maker Project