A good idea, but it needs some work.
This has been said in other reviews, but it bears repeating. The character's movement after releasing the rope is really wrong. It looks like you are multiplying the swing speed by the amount of vertical movement, which just doesn't work very well. This also doesn't make the game very playable.
The game itself has a lot of potential. I love the idea of swinging between things and I have played many many times, but since it's so danged hard to do it properly, I couldn't even complete level 1 on the easy skill level.
Also, why on earth can I fly so far up through the ceiling? Not only does thta not make sense, but it makes throwing the rope to catch yourself again nigh-impossible. If you want to keep the "through the roof" ability, add some kind of hud that tells the player how far off screen they have gone so they at least have a chance of living through the fall.
Also, I applaud your attepts to keep the filesize down, but don't compress the audio so much. It sounds terrible.
Kepe up the good work. I hope to see an updated version of "Just Hangin' Around" soon.