Here is my e.log from the same image on BA.
I get some of the same message - but no sound problem.
Every time you change a channel - the log shows a "Playing...." message. Not every time you get "Playing" you get the error message in your log. So I am not sure it is important.
Did you have this problem before - with the earlier e2 image ?
If this is a new problem - change /usr/lib/enigma2/python/Screens/Channelselection.py to the Orig version. Does it help ?
Cheers, pcd.
ps. Original Channelselection.py attached.