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i won't send an mp3 to fm without a transmitter and mp3 player.
There are several different devices that can be used with an FM mp3 transmitter. Devices such as a portable CD player, portable DVD player, and satellite radios can be used with an FM mp3 Transmitter.
An fm transmitter mp3 usb allows you to play your digital music in your car. You do not have to listen to the music on the radio but you can put songs on the transmitter so that songs on your mp3 player can be played in your car. Go to http://www.amazon.com/Car-MP3-Transmitter-Drive-Remote/dp/B000O3PLYS for examples of transmitters.
Since the Belkin mp3 transmitter has been made with a shorter antenna than other mp3 transmitters you can expect to find some interference in your car with other devices in it.
A Transmitter FM can be advantageous over an mp3 player in that you can receive new songs that may not have been released for sale to the public yet. mp3 players will only play what you have downloaded to them.
A car MP3 FM transmitter allows a person to listen to an MP3 play through the cars stereos. This allows the music to be played louder and eliminates the need to have to struggle and listen to the MP3 player against the rumble of the engine.
A Wireless MP3 Transmitter allows you to play portable audio devices, such as an IPOD or MP3 player through a stereo at home or through any vehicle stereo system without using cumbersome wires. You can compare several devices at the following website: http://www.nextag.com/mp3-transmitter-wireless/stores-html
Not every mp3 player has a fm transmitter. Almost all of the newer ones do however have a build in one. Now, Zunes and Ipods have them in but the Ipods also have build in wireless.
There are several different options in order to purchase one of those great MP3 car transmitter. Some names of websites include for example "Amazon" or "Best Buy".
You can connect your MP3 to your car player via a radio transmitter, such as the iTrip, or by hardline via the Aux In on the back of the player.
An FM transmitter on an iPod or any other mp3 player is basically an FM radio. In the past digital music players did not even have any radio built in. Nowadays, most mp3 players give users access to FM radio stations.
I don't believe that you can purchase an iPod or MP3 Player with an FM transmitter built in. All search results showed stores where you can buy FM transmitters separately.