Various fixes for chromecasts

scripts/cast

@@ -122,8 +122,7 @@ class Cast(wx.Frame):
         inner_sizer.Add(stop_button, FLAGS)
         inner_sizer.Add(back_button, FLAGS)
 
-        if not self.m_chromecast_thr.is_alive(
+        if self.has_usable_chromecasts():
-        ) and not self.m_selected_chromecast:
             btm = make_bitmap_from_file(
                 '{}/assets/Cast.png'.format(self.asset_path), wx.Size(24, 24))
             cast_button = wx.BitmapButton(self.m_panel,
@@ -191,6 +190,19 @@ class Cast(wx.Frame):
 
         return providers
 
+    def has_usable_chromecasts(self) -> bool:
+        if self.m_chromecast_thr.is_alive():
+            return False
+        if self.m_selected_chromecast:
+            return False
+        result = False
+        for cast in self.m_chromecasts:
+            if cast.cast_type != 'audio':
+                result = True
+                break
+        return result
+
+
     def show_channel_list(self, _, provider_index) -> None:
         self.m_selected_provider_index = provider_index
         self.m_selected_provider = self.m_providers[provider_index]
@@ -375,7 +387,13 @@ class Cast(wx.Frame):
         self.m_sizer.Add(cancel_btn)
 
         for cast in self.m_chromecasts:
+            if  cast.cast_type == 'audio':
+                continue
+            friendly_name = "Unknown Chromecast"
+            try:
                 friendly_name = cast.device.friendly_name
+            except AttributeError:
+                friendly_name = cast.cast_info.friendly_name
             btn = wx.Button(self.m_panel,
                         id=-1,
                         label=friendly_name,