Really love this one. The graphics and vibe are great, the music jams, and the story is fun. There are some quality jokes in here too (the idea of all ghosts being part of a haunting MLM sent me). It took me a little bit to realize that the volume controlled how far the little bridges go, but once I did I had no trouble finishing the game.
You mentioned you were considering polishing this into a full release, and I definitely think you should. My one piece of feedback would be to maybe zoom in on the TV for the full release. As nice as the console looked (and it looked nice as hell), it takes up a lot of screen space. I could see that becoming distracting in a longer game.
Also please tell me how you did that window pass-through thing at the end. That was awesome.
Really great job on this one!