... this product WORKS ! Yes, it is ridiculously expensive and I think it's disgraceful that Apple have upgraded a product and didn't include a suitable adaptor in the box - yet again abusing their buying public.
This item charges and allows full audio throughput (with no reduction in sound quality) so one can use the new iPhone/iPod 5 with the older-style docking sound systems. Furthermore, remote controls for the docks operate the devices attached to this connector without any trouble.
Take it from someone who has tried three different gadgets in an attempt to replace Apple's own connector - NOTHING works to the same degree as Apple's product. It really pains me to say that as I had avoided buying anything with Apple on it for many years because I disagree with the monopoly they hold and the way they manipulate their consumers but, quite simply - and probably BECAUSE of both the points I have just made - nothing can beat the way Apple's own products communicate and function with one another ...