Hi,
I'm interested in running a mediaplayer (say Volumio) and Owncloudat the same time in the same Pi 3. Is this really not possible? Can one install the "rest" of Debian above Volumio OS (or vice-versa)?
Might not be an issue with Volumio, as it appears to be a fairly standard Raspbian system. With my "playing" with it so far. Ask the developer - he will have a better idea. Personally, I would rather run it on another RPi.