Hello iMac Fans, While I wait for my 20" iMac to arrive I thought I might search for a set of 5.1-Channel Stereo Speakers that would match the new iMac. Does anyone have any experiences or recommendations? Also, I was reading about the iMac's mini-Toslink connection that allowed the optical-digital 5.1 output. Is this cable included with the iMac, will it come with the speakers or does it have to be purchased seperately? Regards, -Ben