Thanks for the replies. After another reinstallation of Spark on my computer Spark on Android now works again. Don't know what caused the problem nor what fixed it, but I'm happy again. Using the computer to control the stereo was inconvenient.
Living room: Kii Three/BXT with Control.
Den: Tannoy Precision 8 iDP with TS112 iDP subwoofer.
In the cupboard, waiting for a sibling: 1st gen. Phantom Silver running DOS1
My Phantom Voyage
Den: Tannoy Precision 8 iDP with TS112 iDP subwoofer.
In the cupboard, waiting for a sibling: 1st gen. Phantom Silver running DOS1
My Phantom Voyage