Answer to "Where would I buy replacement speakers?"My best bet would be to buy a broken Pill (make sure it isn't the speakers that are broken) and salvage the speakers from it for your speakers. The best place to do so is probably eBay. This link will take you to our replacement guide for the speakers.
Answer to "Where is the Charge over USB Port?"Only the Beats Pill 2.0 has the charge over usb feature, the original Pill doesn't.
Answer to "My volume can't go to max value."There is a troubleshooting page for this issue, please visit it for more info.Beats Pill 1.0 Troubleshooting