public ModelSourceMediaRendererUpnpAv(Source aSource)
        {
            DidlLite  didl      = new DidlLite();
            audioItem itemAudio = new audioItem();

            itemAudio.Title = "Unknown";
            didl.Add(itemAudio);
            kUnknownPlaylistItem = new MrItem(0, null, didl);

            iSource     = aSource;
            iInstanceId = 0;
            iTrackId    = 0;

            try
            {
                iServiceConnectionManager = new ServiceConnectionManager(iSource.Device, iSource.House.EventServer);
            }
            catch (ServiceException)
            {
                throw new ModelSourceException(301, "Service failure");
            }

            iActionGetProtocolInfo = iServiceConnectionManager.CreateAsyncActionGetProtocolInfo();

            iActionGetProtocolInfo.EventResponse += EventResponseGetProtocolInfo;

            try
            {
                iServiceAVTransport = new ServiceAVTransport(iSource.Device, iSource.House.EventServer);
            }
            catch (ServiceException)
            {
                throw new ModelSourceException(301, "Service failure");
            }

            iActionPlay                 = iServiceAVTransport.CreateAsyncActionPlay();
            iActionPause                = iServiceAVTransport.CreateAsyncActionPause();
            iActionStop                 = iServiceAVTransport.CreateAsyncActionStop();
            iActionSeek                 = iServiceAVTransport.CreateAsyncActionSeek();
            iActionNext                 = iServiceAVTransport.CreateAsyncActionNext();
            iActionPrevious             = iServiceAVTransport.CreateAsyncActionPrevious();
            iActionSetAVTransportURI    = iServiceAVTransport.CreateAsyncActionSetAVTransportURI();
            iActionGetPositionInfo      = iServiceAVTransport.CreateAsyncActionGetPositionInfo();
            iActionGetTransportSettings = iServiceAVTransport.CreateAsyncActionGetTransportSettings();
            iActionSetPlayMode          = iServiceAVTransport.CreateAsyncActionSetPlayMode();

            iActionGetPositionInfo.EventResponse      += EventResponseGetPositionInfo;
            iActionGetTransportSettings.EventResponse += EventResponseGetTransportSettings;
            iActionSetAVTransportURI.EventResponse    += EventResponseSetAVTransportURI;

            iTimer = new Linn.Timer();

            // Sets the timer interval to 1 second.
            iTimer.Interval  = 1000;
            iTimer.Elapsed  += TimerElapsed;
            iTimer.AutoReset = false;

            iMutex    = new Mutex(false);
            iPlaylist = new List <MrItem>();
        }