Checklist

If you're thinking about buying an MP3 player, here's what to consider:

Flash or hard disk

The majority of players have a flash memory with no moving parts – this means they handle the knocks better than older hard disk players (which are handy for joggers). There are still some hard drive players around though, and they tend to have more storage capacity.

Size

File formats used by digital music players are comparatively tiny (3-4MB). So a 4GB player will store about 1000 songs at top quality. Video file size varies a lot depending on the quality, but generally take up much more room than music files.

Screen

Screen size can be important. The small display screens on flash players can make it harder to sort through your catalogue of music to find your favourite track, or to view video files. But a bigger, brighter screen puts a greater load on the battery.

Recharging

Batteries may be recharged from the USB port in your computer, from a power point (using an AC adapter), or both. If using a USB port, the player may plug directly into the computer or require a USB cable.

Compatibility

If you use a Mac or an older PC, it's important to check that the player is compatible with your computer.

Memory upgrade

MP3 players with upgradeable memory are becoming less common. Some players are not supplied with any inbuilt memory so you have to buy your own memory card. The advantage is you can choose any size memory you want, and upgrade at any time. Memory cards vary in price depending on the type.

File formats and download sites

There are several different formats for music and movie files and some players will play some but not others. Most music download sites sell music that is usable on most players. You may want to check that your current music collection doesn’t contain any proprietary formats (such as WMA files) that don’t work on all players.

Don't go deaf

To avoid damaging your hearing, follow the 60/60 rule. That's what audiologists recommend.

Your maximum listening time should be 60 minutes a day with the volume no higher than 60 percent. If you listen for more than 60 minutes, you should turn the volume down below 60 percent.

Set the volume when you're in a quiet environment. And don't turn it up to block out noisy environments.

Try this simple rule of thumb ... if you can't hear other people talking when you're wearing headphones, or if other people have to shout at you to be heard three feet away, then the volume's too loud – it could be damaging your hearing.