I have been using Raspberry Pi (RPI) Model B for three years now. Currently running OpenElec 6.0.3 and Kodi.
My setup is probably the simplest.
RPI is connected via HDMI to my Panasonic Plasma ST60 (for video).
RPI has 3.5 mm analog output which is connected to my 10 year old iBall Nirantar Wood speakers which gives me 2.1 channel output.
I have no complains on the video department, but for audio, I would like to upgrade to 5.1 channel (which means I need to buy a good set of speakers - and also figure out how to avoid wires across the walls).
From what I have read, there is another problem. Panasonic Plasma ST60 does not do passthrough of 5.1 channel sound over SPDIF/ optical out, if the inbuilt tuner is not used.
This means, if I simply buy new 5.1 channel speakers and connect them to my TV directly, I will get 5.1 channel output from YouTube played on my TV, but I will get only stereo for movies played from RPI.
So, I am considering other options such as upgrading my RPI to RPI 3 and buying some circuit board which can give optical out and connect the speaker system to the RPI. (This solves the problem of 5.1 channel output from movies, but creates another one - YouTube videos will give out only stereo output -since TV will have no connection with the speakers)
One such option I came across was for $40.
Aliexpress.com : Buy X600 Expansion Board for Raspberry Pi 2 Model B / Raspberry Pi B+ / Raspberry pi Music Player from Reliable board color suppliers on Geekworm official store
Does anyone have other suggestions?