Mspmspsv is the Microsoft system service installed with Media Player 7. (Microsoft premessage security protocol service) Mspmspsv is used for supporting SDMI (Secure Digital Music Initiative). to be used during dealing with music media. It is part of the Media Player components that handle DRM (digital rights management) with respect to media files (e.g. mp3). Check Security Updates: http://support.microsoft.com/default.asp... Mspmspsv: At your option. For security reasons we suggest to disable Mspmspsv service. If you have problems with playing DRM content enable Mspmspsv.