Reported by Nikolaus Schaller, Apr 20, 2018

I scp'ed an mp3 to the "/home/root/Documents" folder. When 
I call "Documents" and select "Rescan system" 
from the menu, it will appear as expected. But when touching the 
mp3, the Media Player will hang at 0:00 / 0:00 and will not start to 
play it. 
I tried the same mp3 with QtMoko v55. There the Media Player will 
automatically start and play the file. 

I guess it's a consecutive fault of this, that indeed I can initiate 
as well as receive telephone calls, but will neither get a ringtone 
(vibra works well), nor hear anything from what the other side 
talks. Interestingly microphone works well. The other side can 
always hear what I'm talking.