I have just ordered this from China on ebay
CD Changer Aux Audio Cable For iPod iPhone For Porsche BECKER CD Player | eBay
At £7.69 I couldn't refuse. The
iP-BKR2 iPod Adapter is about £40 and you can bet it's made in China too like just about everything is.
I think I'll take the CD changer out for good if it works.
I'll let you know how I get on with it.
Taking the Boxster for a trip around Scandinavia in the Summer so getting the music situation sorted out.