what kinda lead do i need to connect mp3 player to aux socket of radio...???

Answer 1

If your aux socket looks like the same as a headphone jack (as is common with the front panel jacks in cars or car stereos now) 1/8" stereo male to 1/8" stereo male cable. If your AUX IN looks like A/V cables, called RCA or sometimes phono jacks, then you need a 1/8" stereo to 2 male RCA adapter cable. Metric equivalent to 1/8" is 3.5mm. These cables are available from Maplin, Radio Shack or whatever the electronics store is where you live.

http://www.maplin.co.uk/module.aspx?TabID=1&criteria=3.5mm%20SPLITTERS&ModuleNo=11422&doy=12m1
http://www.maplin.co.uk/Module.aspx?ModuleNo=31700&TabID=1&source=12&doy=12m1