Ofcom plans to legalise the use of low-power FM transmitters used to connect MP3 players to entertainment equipment.
Under current legislation it is legal to sell the devices in the UK, but they cannot be used without a radio broadcasting licence.
Ofcom said in a statement: "Low-power FM radio transmitters for MP3 players are currently unauthorised for use in the UK and Europe because of the potential to cause interference to broadcast services.
"Ofcom is responding to growing consumer demand for the use of these devices and has led negotiations in Europe to develop a harmonised approach to their use by late autumn 2006."
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