I intalled the MP3 player in five minutes. The back plate comes off with two screws. You pull out the connector, flip it over, and slip in. Personally, I find a hard disk quite unnecessary, with USB slots front and rear. I have a 2GB TD in front for style based songs and SMF, and a 6GB in rear for MP3 files. Like Donny, my unit works flawlessly.
Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact