An MP3 player is a digital device for playing music in the form of MP3 files. They come in various shapes and sizes, the smallest one is called a flash player because the type of memory it has is referred to as flash. Flash memory is compact and doesnt use up much power, so that means smaller batteries can be used for longer. This in turn means that a flash player can be really tiny is size.
Flash based players come at a reasonable price, but they dont have a lot of storage capacity. Anyone who wants to store thousands of songs must upgrade to a hard disc-based MP3. Something had to be sacrificed for all that memory and in this case there were two sacrifices. One was size; the other price.
The most popular hard disc-based MP3 is Apples iPod. While they didnt invent the concept, their MP3 seemed to take over the market due to its ease of use and smart styling. While MP3 players started out as being portable, it wasnt long before larger, non-portable models were offered. They even come with remote controls and are able to integrate into the home entertainment system, using the TV screen to display their menus and feedback.