For the above subject, I tried to open the .vpj file in windows media player but it doesn't support to open the file. So I need a supported codec of the player. My system is working with windows 8.1.

I need windows movie maker free upgrade to edit two or more audio at a time to mix them as overlays to be able to run on my windows. Or suggest me to download a free software, which can do my task, for editing  videos.

[Moved from: Windows / Windows 8.1 / Other Windows apps / Productivity]