The pixel art and audio are great. I found the rewind mechanic pretty tedious & unclear; the first time I entered the backroom and saw the number of tapes to rewind, I got a bit anxious :) It feels to me like there's too much work to do upfront, before serving any customer. It could be improved by spawning some titles on the shelves at the beginning of the game.
The rewind mechanic itself doesn't provide sufficient feedback to understand if I'm doing it right or not. I suppose the 4 green LEDs to the right were supposed to be used for that? In any case, it took a bit of trial and error to figure out how to rewind tapes. The one thing I would change about it: if setting the right number & tuning the dial correctly, it should take only one "ticket hit" to succeed.
Good effort overall!