After reading stories about the old firewire iPod power supplies doing bad things to the iPhone, I want to replace the power adapter thats currently connected to my Hifi's Apple iPod dock, so that I can dock my iPhone there. However, rather than spend money on a new USB adapter, I was thinking I could just plug an iPod USB cable into the Airport Express USB port, as I have an AE next to my Hifi (for Airtunes). Has anyone tried this? If not, can anyone see any issues with this? To clarify, I just want to use the USB port for power.