Quote Originally Posted by tulips
p.s that picture in the above link is that an audio jack?
yup, or more specifically 3.5mm plug.

Since the PSP and your car are both 3.5mm sockets, you'll need a cable which has plugs on both ends.

http://www.dse.com.au/cgi-bin/dse.st...uct/View/C1159
That picture there shows a cable with both a plug and a socket, the one you're after is a cable where both ends are plugs (metal sticking out with 2 black rings around it). There are various types of 3.5mm plug cables, differences would me Mono or Stereo and what they're made of. Get a stereo cable, as for getting a normal one or a gold plated one... personally i think either would be fine but if your more pedanticabout quality then get a gold plated one.

These cables are also available in many places Dick Smith, Tandy, Jaycar, Myer (some), David Jones (some), JB Hifi, Strathfield Car Radio, possibly Kmart, Big W and Target as well. Any store which sells home theatre systems should have the cable available.