As deepblue suggested it depends upon the player you intend to use for the songs. More specifically you can fit around 79mins 52 secs incl. any pauses b/w the tunes on a 80 min CD at full audio quality, or 7-14 times the time length of the mp3 songs if you choose to burn them as an mp3 disk to play on an mp3 player (this can vary greatly!)