DIN to RCA (Cinch) cable. Attention, usually 4 RCAs (2 in, 2 out). Put the DIN in the AUX Socket, the Cinch into the sony.
Cable looks like this:
Best regards
Ralf
My Beo: Beosound 3000, Beolab 4000, Beo 4 DVD, Beolab 5000/Beomaster 5000, Beovox S45.2 with Stands, Beosystem 7000 black with Beolink 7000, Beolink 1000, F1000 (3 cubes), Beovox 5000, Beovox 3000, Attyca 1.