It requires Win media player. I despise win media player and ONLY use VLC. Microsoft just has way too many prying eyes into users personal data for me to run anything but the (actually not wanted) Win 7 os itself, and ONLY Win 7. (I prefer Linux Mint) I uninstalled this editor immediately. MS can bite me when it comes to spying on MY system. Tanx, but no tanx Shareware onsale. This software needs it’s own media source, or should be able to adapt VLC (FAR the best player of all formats!).