1 or 2 of my friends had a adapter for their cellphones that you could plug in your normal headphones there, anybody knows how they are called or where i can buy em?

My dad got one of those when he bought a Walkman W902. I use it with my K800i and I plug my subwoofer and 1 speaker in it :3

could you maybe ask him where he bought it? ( dont tell me sonyericsson.com, already looked there )

It came with the phone which was bought from Orange if I'm not wrong. I think you could find it in some electronics shops...

k thy