Issue with MPD python library after Moode update

[mancio61]

Hi Kent, I try all but it fails. 
I have a suspect to have a network issue. Even the radio (going onto the Internet) don't play at all.
Neither a simple "sudo apt-get update"... it fails with the message "couldn't resolve 'archive-raspberrypi.org'

the system is perfectly see inside my LAN (e.g. I'm able to play music get from my NAS), but seems to be have issue to go out in the Internet.
Before the update to last Moode version it worked perfectly.

I'm not a Linux expert, so what I can do to check and fix this issue ?

thanks !
Andrea