How to use

setPosition

method

in

com.badlogic.gdx.audio.Music

  @Override
  public void changed (ChangeEvent event, Actor actor) {
    if (!sliderUpdating && slider.isDragging()) music.setPosition((slider.getValue() / 100f) * songDuration);
  }
});

private void playMusicOnDemand() {
  if (!world.started) {
    world.started = true;
    if (hasMusic) {
      theSong.setLooping(false);
      theSong.setOnCompletionListener(this);
      theSong.setVolume(GlobalConfiguration.songVolume / 100f);
    }
  } else {
    if (world.paused) {
      world.paused = false;
      if (hasMusic) {
        theSong.setPosition(lastmtime);
        time = lastmtime + world.delay;
        theSong.play();
      }
    }
  }
}

@Override
public void render(float delta) {
  Gdx.gl.glClearColor(0, 0, 0, 1);
  Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
  stage.act();
  stage.draw();
  if (theSong != null && theSong.isPlaying() && theSong.getPosition() > newBPosition) {
    theSong.setPosition(newAPosition);
  }
}

theSong.setPosition(newAPosition);
theSong.setVolume(GlobalConfiguration.songVolume / 100f);
theSong.play();

@Override
public void retrieveAssets() {
  if (voice == null && fileName != null) {
    EngineLogger.debug("RETRIEVING VOICE: " + fileName);
    voice = EngineAssetManager.getInstance().get(EngineAssetManager.VOICE_DIR + fileName, Music.class);
    voice.setOnCompletionListener(new OnCompletionListener() {
      @Override
      public void onCompletion(Music music) {
        if (textManager.getCurrentText() != null)
          textManager.getCurrentText().setAutoTime();
      }
    });
    if (voice != null)
      voice.setVolume(volume * VOLUME_MULTIPLIER);
    if (isPlayingSer) {
      voice.play();
      if (voice != null) {
        voice.setPosition(voicePosSer);
      }
      isPlayingSer = false;
      voicePosSer = 0f;
    }
  }
}

@Override
public void retrieveAssets() {
  if (music == null && desc != null) {
    // Check if not loaded, this happens when setting a cached scene
    if (!EngineAssetManager.getInstance().isLoaded(EngineAssetManager.MUSIC_DIR + desc.getFilename())) {
      // Load the music file in background to avoid
      // blocking the UI
      loadTask();
      return;
    }
    EngineLogger.debug("RETRIEVING MUSIC: " + desc.getFilename());
    music = EngineAssetManager.getInstance().getMusic(desc.getFilename());
    if (isPlayingSer) {
      playMusic();
      if (music != null) {
        music.setPosition(musicPosSer);
        musicPosSer = 0f;
      }
      isPlayingSer = false;
    }
  }
}

theSong.play();
if (aPosition != null)
  theSong.setPosition(aPosition);
lastmtime = theSong.getPosition();
time = lastmtime + world.delay;

if (hasMusic) {
  theSong.pause();
  theSong.setPosition(aPosition);
  theSong.play();
  lastmtime = theSong.getPosition();