On YouTube Audio Extraction
One of the first big integrations I settled on while developing isobot was YouTube. At the time, YouTube Music bots were pervasive in almost every community and server. It seemed like just about every bot had to have the ability to play a song, or, for some of the more complex ones, an entire song queuing system!
I initially tried looking around at other open-source bots to see how they were implementing such a feature.