How to Play an MSV File in Windows Media Playerby Michael Butler
Windows Media Player can play audio and video files in a variety of formats. It cannot play every file type without making some modifications. Sony developed the .msv file format for use in Sony Memory Sticks as a way to compress voice files. To play the .msv file in Windows Media Player, download and install the Windows Media Player plug-in designed by Sony for that purpose.
Open your Web browser and navigate to the Sony website (see Resources). Download PlayerPluginSetup129.exe. Close your Web browser.
Double-click on the file you just downloaded. Click "Next." The license agreement will pop up. Click "I Agree."
Click "Next" through the next three dialog screens. A Readme file will open in Notepad. Click on the "X" button to close it.
Click "Finish," then click "OK." Your computer will restart. You can now play .msv files in Windows Media Player.