player/Control: Play*() returns Error information

src/player/Control.cxx

@@ -49,18 +49,20 @@ PlayerControl::~PlayerControl()
 	delete tagged_song;
 }
 
-void
-PlayerControl::Play(DetachedSong *song)
+bool
+PlayerControl::Play(DetachedSong *song, Error &error_r)
 {
 	assert(song != nullptr);
 
 	const ScopeLock protect(mutex);
-	SeekLocked(song, SongTime::zero(), IgnoreError());
+	bool success = SeekLocked(song, SongTime::zero(), error_r);
 
-	if (state == PlayerState::PAUSE)
+	if (success && state == PlayerState::PAUSE)
 		/* if the player was paused previously, we need to
 		   unpause it */
 		PauseLocked();
+
+	return success;
 }
 
 void

src/player/Control.hxx

@@ -311,7 +311,7 @@ public:
 	 * @param song the song to be queued; the given instance will
 	 * be owned and freed by the player
 	 */
-	void Play(DetachedSong *song);
+	bool Play(DetachedSong *song, Error &error);
 
 	/**
 	 * see PlayerCommand::CANCEL