Quick update on this Cepi.
I decided to do a hard reset of the Jolla last night. It was just so messed up. It got to the stage where app icons were disappearing and the ambiences were just messed up with multiple colours, couldn't change the colour of the text, which was stuck at purple and couldn't read it on some screens.
I'm not 100% sure what caused it but it was after I installed the Dynamic Clock Icon app, as that was always the first icon to disappear.

I'll give FlowPlayer another go and get back to you.