I currently use a western digital external HD, connected to my MBP, to store my iTunes library. I would like to free up the MBP when streaming audio/video to various ATV's and airport express's around the house. I would like to connect the HD to the network via an airport extreme and was wondering about the feasibility of this. Would the connection be viable? Fast enough? Does anyone have any better ideas to fix this. I am moderately technical and I'm willing to gen up on anything that would be new to me. Many thanks in advance for any advice.