I find the 0.3 beta quite polished allready.
One odd thing that could be debugged is that every time I launch my Raspberry RuneAudio I have to "REFRESH INTERFACES" and "REMOUNT ALL SOURCES" if I want to play a last autosaved queue (or anything at all as a matter of fact). Strange thing is that I can connect through WIFI even before it is ticked green (after remounting all sources). Would be nice if that REFRESH and REMOUT would be done automatically at every start of the system.