Playback using airplay on volumio 1.1b on RPi has audible glitches.
Airplay is perfect using raspyfi on RPi. Config is MBA/iTunes -> rpi-b running raspyfi1.0
whats up with volumio airplay ???
apparently a known issue, and the author said he will post a new version to fix this.
This fix should solve your issue:
http://www.raspyfi.com/forum/raspyfi-install-and-troubleshooting/how-to-change-the-shairport-sample-rate/
You’ll find included in next Volumio release. Please report if that works! 