ilovric, Jan 17, 2016 : Confirming that mp3 playback works after installing gstreamer libraries. pkcon install gstreamer1.0-libav Couple of things that need some more treatment are camera, gps, some sensors, official store and battery performance. Thank you everyone for your contributions! Also find some screenshots attached. EDIT: just noticed, youtube videos are black while watching with Jolla web browser, but sound is ok.