Just to add some more information: I let you check the console lines related to this issue
26/01/2014 11:41:56,910 SystemUIServer[549]: 2014-01-26 11:41:56.910384 AM [AirPlayAVSys] Picking route 'Apple TV' (9C:20:7B:DD:60:5F)
26/01/2014 11:41:56,912 AirPlayUIAgent[632]: 2014-01-26 11:41:56.911999 AM [AirPlayUIAgent] AirPlay Screen starting for Apple TV (9C:20:7B:DD:60:5F)
26/01/2014 11:41:56,914 SystemUIServer[549]: 2014-01-26 11:41:56.913962 AM [AirPlayAVSys] Selecting endpoint 9C:20:7B:DD:60:5F, item 26 for (screen)
26/01/2014 11:41:56,915 coreaudiod[279]: 2014-01-26 11:41:56.914912 AM [AirPlay] Selecting endpoint 9C:20:7B:DD:60:5F "Apple TV" for screen
26/01/2014 11:41:56,934 AirPlayUIAgent[632]: 2014-01-26 11:41:56.933487 AM [AirPlayAVSys] AirPlay became the default audio device
26/01/2014 11:41:56,934 SystemUIServer[549]: 2014-01-26 11:41:56.933524 AM [AirPlayAVSys] AirPlay became the default audio device
26/01/2014 11:42:27,925 coreaudiod[279]: 2014-01-26 11:42:27.925450 AM [AirPlay] ### Endpoint "Apple TV" record error: -6722/0xFFFFE5BE kTimeoutErr
26/01/2014 11:42:27,926 coreaudiod[279]: 2014-01-26 11:42:27.925608 AM [AirPlay] ### Record failed: -6722/0xFFFFE5BE kTimeoutErr
26/01/2014 11:42:27,927 coreaudiod[279]: 2014-01-26 11:42:27.926703 AM [AirPlay] ### Endpoint "Apple TV" start failed: -6722/0xFFFFE5BE kTimeoutErr
26/01/2014 11:42:27,927 coreaudiod[279]: 2014-01-26 11:42:27.926805 AM [BonjourBrowser] Reconfirming PTR for Apple TV._airplay._tcp.local. on en0
26/01/2014 11:42:27,927 coreaudiod[279]: 2014-01-26 11:42:27.926957 AM [BonjourBrowser] Reconfirming PTR for 9C207BDD605F@Apple TV._raop._tcp.local. on en0
26/01/2014 11:42:27,927 coreaudiod[279]: 2014-01-26 11:42:27.927106 AM [AirPlay] Posted 'com.apple.AirTunes.endpointStartError' with -6722/0xFFFFE5BE kTimeoutErr
26/01/2014 11:42:27,927 coreaudiod[279]: 2014-01-26 11:42:27.927215 AM [AirPlay] Posting kAudioDevicePropertyDataSourceInfoForID: item 26 error: -6722/0xFFFFE5BE kTimeoutErr
26/01/2014 11:42:27,927 coreaudiod[279]: 2014-01-26 11:42:27.927317 AM [AirPlay] Quiescing endpoint 'Apple TV'
26/01/2014 11:42:27,928 AirPlayUIAgent[632]: 2014-01-26 11:42:27.927759 AM [AirPlayAVSys] ### Quiesce AirPlay
26/01/2014 11:42:27,930 AirPlayUIAgent[632]: 2014-01-26 11:42:27.930306 AM [AirPlayAVSys] ### Quiesce AirPlay
26/01/2014 11:42:27,948 AirPlayUIAgent[632]: 2014-01-26 11:42:27.948345 AM [AirPlayAVSys] Ignoring route away when AirPlay not current
26/01/2014 11:42:27,950 AirPlayUIAgent[632]: 2014-01-26 11:42:27.949556 AM [AirPlayAVSys] AirPlay no longer the default audio device
26/01/2014 11:42:33,365 SystemUIServer[549]: 2014-01-26 11:42:33.364523 AM [AirPlayAVSys] ### Quiesce AirPlay
26/01/2014 11:42:33,366 SystemUIServer[549]: 2014-01-26 11:42:33.365730 AM [AirPlayAVSys] Ignoring route away when AirPlay not current
26/01/2014 11:42:33,366 SystemUIServer[549]: 2014-01-26 11:42:33.365844 AM [AirPlayAVSys] ### Quiesce AirPlay
26/01/2014 11:42:33,367 SystemUIServer[549]: 2014-01-26 11:42:33.366953 AM [AirPlayAVSys] Ignoring route away when AirPlay not current
26/01/2014 11:42:33,368 SystemUIServer[549]: 2014-01-26 11:42:33.367743 AM [AirPlayAVSys] AirPlay no longer the default audio device