Switch to HLS Streaming

[simonv3]

https://stackoverflow.com/questions/21878178/hls-streaming-using-node-js

Basically it sounds like for this to work we have to

1. Convert our audio to m3u8 playlists
2. Then serve it in a similar way with koa-send as we do now.

Here's a sample of converting a file to m3u8 hls

Here's a node-package that sets up a streaming server: hls-server

Some additional context / questions:

• We currently require people upload their files as flac
• Ideally we'd let people upload their files as wav or aiff (all lossless), and then convert them to flac on our server for storage
• Currently we're keeping all of our flac files in /mnt/media/incoming which means we can process them again for higher quality stuff
• We have to figure out at what qualities we want to make streaming available. This is a trade-off between bandwidth and listenability.
• Is there a way to variably set streaming quality based on internet of the user, and how should that data be stored for that to be the case?