This is intended to be used as an audio aid to help memorize morse code. Loop the playback by right clicking and selecting "Loop". Click on "CC" to turn on annotations. Try changing the playback speed, as needed, using the controls under the gear icon. After several playback loops, try anticipating the morse code and visualizing the dits and dahs in your mind. Also, you might try typing each letter as the code is played, if you are a touch typist. These challenges will reinforce memorization.