I have a 2nd gen iPod connected to a cradle, connected to an old Sony receiver. Music from an FM station is very clear and good. Music from the iPod, on phono mode, is very bad. Static, humming etc. Thought it was the cradle so bought a new one but same thing. Can't be the speakers as music from 101.1 is good. Can't be the iPod as music directly to headphone is good. Please, at my wits end.