So I just got an Amazon Fire Stick, and low, they don't have a front end app for SubSonic. Well, pooh. Guess I gotta make one.
http://www.subfireplayer.net/
Still a work in progress (right now only works hard-coded to localhost:4040/subfire/subfire) but the raw basics are there - connect/ping, playlist display for select, play/pause/next/prev with looping (automatic for now), and cover art.
Implemented in jquery,jquerymobile,stativus,observe-js, along with the vanilla-js html5 audio tag and api. The latter limits the browser support to only things since 2013, but that's my target audience so I'm hardly worried. They have other options.
Code will be open source (MIT license) when it is ready for public release. I'll probably charge a buck or two for the amazon fire app, but the web page version when turned public will be free since it will talk directly to your own server. The main focus will just be playlist playing at first, and I'll go for full browsing capabilities later.
I hope to be able to go public-beta with the web-page version in a week or so.