update audio dept. to use built in metadata from gstreamer-player

screenless/bureau/audio/audio.py

@@ -94,12 +94,12 @@ class Audio(Bureau):
         Prints the currently playing song or stream on the small printer.
         """
         out = "Now Playing: "
-        out += self.player.title + "\n"
-        if self.player.artist != "":
+        if self.player.title:
+            out += self.player.title + "\n"
+        if self.player.artist:
             out += "by " + self.player.artist + "\n"
-        if self.player.album != "":
-            out += "from the album '" + self.player.album \
-                    + "'\n"
+        if self.player.album:
+            out += "from the album '" + self.player.album + "'\n"
 
         # TODO: add fields for "organization" and "location" for gstreamer-player
         #       so we can get the station ID stuff