I have just installed Q4OS distro on my Booklet and I'm finally happy. Up to date linux and working. Installed smtube and then downloaded updated smplayer version and installed it with sudo dpkg -i from download folder and installed up to date youtube-dl and videos play perfectly with audio and can watch youtube with smplayer without problems.

Firefox works well too. I use blank page for startup and don't use many tabs and have ublock extension added and set firefox not to remember history. Youtube videos run also with firefox.

Also libreoffice writer works well 'cause this distro is less ram hungry.

Brightness and sound control keys works as they should.

Had some problems connecting to hotspot (the network didn't show straight) but it works now too. Had to use "connect to new network" option.