hi, just a quick question. i am thinking of getting an airport express. i will use this mainly for streaming music to my hi-fi. however also want to know if i can use it as a file server if i plug a hard drive with an ethernet port directly into it, or will this not work? also is the spead of the airport express sufficent that data culd be read from that hard drive an music streamed to the airports output at the same time? thanks for any help