Convert MPL to AVI

Multimedia playlists cannot be typically converted to multimedia files. A .mpl file contains just a list of videos or music to be played in a sequence with a media player, not the actual multimedia files (like .avi). As such, mpl to avi conversion is impossible. However, you can manually open the playlist using a text editor and check the location of the actual audio files. If the playlist is not yours, it is unlikely you will find them thought.

Simply put, it is impossible to convert MPL to AVI directly.
Thus, there is no so-called mpl to avi converter or a free online .mpl to .avi converter to be found.