Audiobook support

[cook-f]

Support for listening to audiobooks including things like progress tracking and sleep after {time}

potential integration with Libirivox as a source (+ others)

[pompshuffle]

I second this

[davidcollini]

I would love this to be incorporated aswell, but with new sources that people don't know about beforehand, there should be a way to differentiate music services from audiobook or podcast services and maybe a brief description of what the service actually is

[tauantcamargo]

@nukeop are someone working on it? can i get it?