Process: wmpnetwk.exe (Windows Media Player Network Sharing Service)
from 
Stardock Forums
Stardock Forums
wmpnetwk.exe - General Information
Name:
wmpnetwk.exe (Windows Media Player Network Sharing Service)
Publisher
Microsoft Corporation
Product:
Windows® Operating System
Default location:
%ProgramFiles%\Windows Media Player\wmpnetwk.exe
wmpnetwk.exe - Description and Recommendation
wmpnetwk.exe is the main executable for Windows Media
Player Network Sharing Service. It is used to share Windows Media
Player libraries. Disabling or enabling it is down to user preference.
wmpnetwk.exe - Uninstall Techniques