diff --git a/lib/sonos/endpoint/a_v_transport.rb b/lib/sonos/endpoint/a_v_transport.rb
index 754c975..6fbc74b 100644
--- a/lib/sonos/endpoint/a_v_transport.rb
+++ b/lib/sonos/endpoint/a_v_transport.rb
@@ -39,13 +39,14 @@ def has_music?
   # Get information about the state the player is in.
   def get_player_state
     response = send_transport_message('GetTransportInfo')
-    body = response.body[:get_transport_info_response]
-
-    {
-      status: body[:current_transport_status],
-      state:  body[:current_transport_state],
-      speed:  body[:current_speed],
-    }
+    if response
+      body = response.body[:get_transport_info_response]
+      {
+        status: body[:current_transport_status],
+        state:  body[:current_transport_state],
+        speed:  body[:current_speed],
+      }
+    end
   end
 
   # Returns true if the player is not in a paused or stopped state
@@ -103,7 +104,7 @@ def select_track(index)
 
   # Clear the queue
   def clear_queue
-    parse_response parse_response send_transport_message('RemoveAllTracksFromQueue')
+    parse_response send_transport_message('RemoveAllTracksFromQueue')
   end
 
   # Save queue
@@ -237,12 +238,16 @@ def set_av_transport_uri(uri)
   end
 
   def transport_client
-    @transport_client ||= Savon.client endpoint: "http://#{self.group_master.ip}:#{Sonos::PORT}#{TRANSPORT_ENDPOINT}", namespace: Sonos::NAMESPACE, log: Sonos.logging_enabled
+    if self.group_master
+      @transport_client ||= Savon.client endpoint: "http://#{self.group_master.ip}:#{Sonos::PORT}#{TRANSPORT_ENDPOINT}", namespace: Sonos::NAMESPACE, log: Sonos.logging_enabled
+    end
   end
 
   def send_transport_message(name, part = '<Speed>1</Speed>')
     action = "#{TRANSPORT_XMLNS}##{name}"
     message = %Q{<u:#{name} xmlns:u="#{TRANSPORT_XMLNS}"><InstanceID>0</InstanceID>#{part}</u:#{name}>}
-    transport_client.call(name, soap_action: action, message: message)
+    if transport_client
+      transport_client.call(name, soap_action: action, message: message)
+    end
   end
 end
diff --git a/lib/sonos/features/voiceover.rb b/lib/sonos/features/voiceover.rb
index 0fb0ab6..e26ff90 100644
--- a/lib/sonos/features/voiceover.rb
+++ b/lib/sonos/features/voiceover.rb
@@ -13,6 +13,11 @@ def voiceover!(uri, vol = nil)
     result.merge({duration: (Time.now - start_time )})
   end
 
+  def resume_queue
+    puts "resume queue"
+    play uid.gsub('uuid', 'x-rincon-queue') + '#0'
+  end
+
   protected
 
   def with_isolated_state