update audio player

core/radio/radio.gd

@@ -35,6 +35,12 @@ func prev_track():
 func toggle_pause():
 	stream_paused = !stream_paused
 
+func pause():
+	stream_paused = true
+
+func unpause():
+	stream_paused = false
+
 func stop_radio():
 	stop()
 	stream_paused = false