While the Clarity Alofts are truly droolworthy, they cost a bomb. After some reading around I decided a pair of Lightspeed Cross-Country's would be just the thing, and they have a cellphone port that you could plug an CD/MP3 player into.
I got mine from a septic company on eBay, theyre very comfy and I look forward to trying them out Monday! I think they always have a set up, there's one there now at:
http://cgi.ebay.co.uk/Aviation-Pilot...QQcmdZViewItem
[EDIT]: That link is b0rked, try searching eBay for "xc-cell"
(but if I were richer I'd have got the Clarity Alofts... so pretty. so very pretty.)