is it possible to play music from my laptop (for example Facebook videos)? I now have connected my laptop to an external soundcard (Focusrite Scarlett 2i2) and jacked the soundcard output to a line input on my Prime 4 but until now I can’t get any music from my laptop on my Prime 4 channel…
No it can’t. The standalone idea means the laptop can stay at home, having exported your music to an external hard drive or an SSD of your choice fitted inside the prime 4.
I understand the reason behind a standalone system, but when my Prime 4 is just at home it would have been convenient to use it also to play music directly from my computer. Such a pity…