The most peaceful rides I ever have are when I have sound-isolating earphones, which cut out almost all the wind noise and let me listen to my iPod at low volumes.

I haven't tried the Slipstreamz wind deflector/earphone holders, but I happened upon a commuter who was wearing them, and he had great praise for them even without using them for music.

It looks like they're still available here:
http://www.macfriends.com/theslip.aspx

Three-year-old NY Times article:
http://www.nytimes.com/2006/11/02/te...rssnyt&emc=rss

Also found this writeup while looking for them:
http://www.bikexprt.com/bicycle/hearing.htm