I currently have a Onkyo HT-S9300THX surround system,a HD directv reciever and a 42" vizio flat screen,I am looking for a PC to play music,videos,and movies through my HT and Vizio.I am looking at a HP Pavilion Elite HPE-450f,is this PC a good choice?Over kill,underkill?Not going to do any gaming on this one,just music,movies,video,and web surfing.thanks