This video shows you how to use flacs inside of iTunes. FLACS are higher quality audio files than your average mp3.FLAC stands for Free Lossless Audio Codec. It is designed for people who want to hear their music in a great high quality. For Mac users, download fluke. If you have iTunes up already, select open applications and open with. Select fluke and import it into iTunes. Once it has finished doing its thing, your music will open and you can play it. Essentially the system is tricking it to think that it is a quick time movie file.