Speed up playback by avoiding unnecessary seek when playing from the beginning of a file.

playback/src/player.rs

@@ -580,10 +580,13 @@ impl PlayerInternal {
 
         let mut decoder = VorbisDecoder::new(audio_file).unwrap();
 
+        if position != 0 {
+            info!("seek {}", position);
             match decoder.seek(position) {
                 Ok(_) => (),
                 Err(err) => error!("Vorbis error: {:?}", err),
             }
+        }
 
         info!("Track \"{}\" loaded", track.name);