The iPod shuffle is a small flash memory based player whose main function is to play music in a random order. An iPod shuffle has a capacity of 1 GB, which can hold up to 240 songs based on a standard of 4 minutes per song in AAC format.
1 Additional Answer
We generally hold mp3 songs in our player. The average size of a mp3 song is about 5mb. And iPod shuffle has two versions, 1Gb and 2Gb. You can do the calculation yourself..