I will be putting together a mac mini HTPC setup in the next couple of weeks. I currently have an iMac with a 2TB external HD attached to it that stores my iMovie data as well as my iTunes data. I also have an Airport Extreme N to be complete. I am looking for the best way to "share" my media (mainly iTunes) between the two computers. Should I leave the external HD attached to the iMac and then share the iTunes library or should I plug the external HD into the Airport Extreme? Thanks.