I have a hard wired speaker in the bathroom where i would like to play some ambient music. It will be connected to amplifier which will be connected to rapberry. Mainly i’m thinking of internet radio streams - so the question is whick player is best integrated into openhab? Which can be easily integrated into rules to start at 8am and stop at 11pm?
Maybe take a look at MPD (Music Player Demon). There’s a binding for it as well as several other possibilities to control it. Also its easy to install (apt-get install mpd) and very lightweight (low cpu usage and low RAM requirements).
Check into http://www.max2play.com/
you can load that on the pi and then use a bunch of different sources. I use logitech media server as my primary source.