To create a video file from a wav, just use ffmpeg. This is how I created a 4k resolution video using just ffmpeg and an image file and audio wav I got off the Internet.
Put both files into the same folder and then run this command. This will add two frames to the video, this will allow the video to process properly on Youtube.
jason@darkstar:~/Downloads$ ffmpeg -r 1 -loop 1 -i pellets_plant_in_zapolyarny.jpg -i "Ambient Dark Skies.wav" -acodec copy -r 1 -shortest -vcodec libx264 industry.flv
Playing an earlier attempt I made with a different image.
And this is the finished video file in 4k on Youtube: https://www.youtube.com/watch?v=S5gQbAdFnQk&feature=youtu.be.
This way, a simple video may be created to show off music, without a video editing application.