Downloads youtube video, extracts the audio off it.

UPDATE: ON HOLD. Downloading YouTube videos and distributing it is Illegal (and more importantly, Not cool). However, I think it's okay if I do this for personal use. Will continue when I know for sure.

Early stage, ugly code, yada yada

TODOs:

• logging
• command line input
• proper error handling
• better file system structure
• use channels
• caching