I follow Rick Astley and some other stuff similar to him on twitter. Trough this I found out that Rick Astley is the presentator(host) of a radio station(Magic 105.4 http://magic.co.uk/rick ) EVERY sunday from 2pm(London time) 2 hours long!  It's a request radio, so via at the the url you can request your song. Don't know if it will be chosen though but anyway you can hear his voice live!
I use our internet radio to listen at it, so if you are a R.A. fan don't forget to listen sunday.

I wonder if he plays his old hits... would he accept to play remixes of them?

I listened last sunday, and every time he speaks you hear NGGYU in the background. He's probably sick of it.

[xkcd=]http://xkcd.com/351/[/xkcd]