So I'm thinking about getting the time capsule for my new mac mini. I would like to upgrade from my g series wifi router to n. Also, as I have a mini with a 160gb hard drive, I keep my large collection of mp3 and video files on an external hard drive connected via USB. I was thinking that the time capsule would upgrade my router and free up a USB plug but I'm wondering if the read speed on it is fast enough to view videos and listen to music directly from the time capsule?