code: public SoundCloudTrack getCurrentTrack() {
          if (mCurrentTrackIndex > -1 && mCurrentTrackIndex < mSoundCloudPlaylist.getTracks().size()) {
              return mSoundCloudPlaylist.getTracks().get(mCurrentTrackIndex);
          }
          return null;
      }
docs: Return the current track.
  
  @return current track or null if none has been added to the player playlist.