Took my new (to me) 2008 Goldwing out for a "shakedown" ride today, and when I plugged my iPod into the auxiliary cord and tried to listen got this really obnoxious whine that changed pitch with the engine rpms. Any ideas how to get rid of it? I'd really like to listen to my own music, but surely can't do it now with that whine in my ears! Sure would appreciate any help!!