I just bought a Dynex AC Wall Charger for my iPod touch today - http://www.dynexproducts.com/pc-587-8-dynex-ipod-mp3-ac-wall-charger-black.aspx - and I am having big problems with volume control while using it. The charger comes in 2 parts - a wall plug with an USB port in it, and a black sync cable. When I use the black cable for charging, my iPod goes mute, and I lose all volume control. The volume rocker does absolutely nothing, and when I go into Music and play a song, the volume slider is not present (it only shows play, FF, and RW). Also when I go into settings and adjust the volume, the slider is present, but the volume is still muted. However when I use the original Apple sync cable or use headphones while using the black cable, everything works fine. Any help? (other than "use the white cable")? I am running 3.3.1 on a 2nd gen iPod touch.