Support for Caching entire music library at once

[JackPala]

This could potentially already exist or perhaps could be a good improvement, but the ability to cache entire music folders or the entire library would be super useful for those who live outside of the range of internet frequently, and have larger libraries on Subsonic/Gonic

Modern phones seem to be getting more and more space for less less money, so having a 10-20GB music cache on a 1TB phone would not be problematic storage-wise.

[einsteinx2]

I think this could be a great idea for some people depending on their library size. I've heard from a lot of people that have massive libraries where this wouldn't work, but as this request is proof of, there are many people with libraries well within the size of caching entirely to their device.

Currently the highest level you can cache is a top level folder (aka an artist), but nothing to cache an entire media folder or library... I'm going to keep this issue open and look into adding this to the new Swift rewrite. It has more robust support for song downloads than the App Store version.