Thanks for trying out the game!
I understand that the music can be something that other people may not like, but that was the best one I could find at the time I was searching for one. No worries.
I could use the Full Screen option but the game isn't really set up to be played on full screen so you'll only see the game window on 800x600 and everything else around it is empty. I had trouble with setting it up to be in 1920x1080 so I had to upload it on a lower resolution. I'm sorry about this. I'll see if I can fix this but I don't know when I'll be able to.
And yeah, I did know that sometimes the jump doesn't work properly but I never knew how to fix it so I added on the game's description that there are known bugs. I'll try to look into how to fix it but it may take a while.
Still, thank you for trying out the game and we're glad that you still enjoyed the game despite the flaws.