MDI Aux in cable or quadlock pins

Does any one know the price and the part number for the MDI Auxiliary In cable?

i.e. would enable you to connect laptop, mp3 player etc through 3.5mm jack to the car via MDI

I've retro fitted MDI but i've got no line in. Now i've got the connections on the MDI loom for aux in and the plug but no pins to go in it, they seem to be rare as rocking horse **** or priced up at stupid money (£3.16 per pin!) there the same pins as whats in the smaller plugs on the quadlock connector

So if any one could tell me where I could get hold of the pins instead i'll make my own cable up that goes straight into the MDI loom, im loathed to hack into the loom and im starting to think the MDI cable would look better and you have to unplug the USB/Ipod lead anyway to enable the Aux In

Thanks,

Dan