I just got a nice pair of AKG K370 earbuds. Sound great on my ipod and 10 year old cd player. But when I use them with the wiz, the vocals are removed from music. If I press the call answer button on the headphone cord, I get vocals but that only lasts while I'm holding the button down. The headphones have one of those "Apple" 3-part connectors, which I think may be part of the problem. Any idea if this can be worked around?