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Thanks for your prompt response.
I think I will order one despite the uncertainty as I can send it back within 7 days under the UK's distance selling regulations. In any case it's less than a tenner so not a big risk.
I already have a couple of Apple Remotes that have come with some of the Macs I have bought so in that respect it should end up much cheaper than the keyspan options, if it works.
With that to do simple controlling and the option of connecting my Wiimote when I want to have a bit more control this is definitely going to be a killer solution.
Will let everyone know whether this works or not. Should be here 2 or 3 day.s