Minor updates

You forget a lot of things when you make a game in a day! In case anyone's curious:

• Added a way to exit the game (whoops)
• Adjusted the speed-changing system so that the "hit" always falls at the peak of the orb's arc, making higher speed more playable
• In the light of the previous change, increased the speed max to 4x (I've seen osu players play harder)
• Fixed the aliasing effect on the audio, at least on computers with 48000 khz audio (which is most Windows computers)
• Adjusted some orbs to look and feel more consistent
• Fixed the application name (lmao)
• Lowered the volume so that it doesn't clip (as much?)
• Reworked the orb syncing system to prevent lag from desyncing the game
• Snapped the orbs to the beat so that they're more in-sync