I have installed version 0.3 and what is good news Wifi connection works now. I wasn't able to use it with previous versions.
But it seems there are still 2 things which I'm not sure are ok:
1. I needed to use ethernet connection for the first usage to configure wifi connection. It didn't work with wifi only. However when I configured wifi, I can unplug ethernet and even after power off / on it works with wifi only. Perfect!
2. The second issue is that while using wifi only I'm loosing library after power off / on. I'm using music from NAS, I added library, scaned it and everything worked well. But when I power RPi off and then power it on again I can't access previously configured library (red cross next to library name). So I need to go to configuration and add the library again.
Anyone seeing the same issue?