hi,guys i want to record my self playing guitar, i have a sure sm57 mic in front of a speaker cab, mic then connects to a line6 hd500 ,i got the hd500 connected to a pc using the usb ports from hd500 to the pc, then using audacity program to record myself, at the moment the hd500 is connected to the pc using a usb cable is this right thing to do yes/no ??? or do i connect the hd500 using the unbalanced output connections (image below) to the ear phone on the pc yes/no??? i am using hd500 as a audio interface, do you guys thinks this is ok, or would guys recommend me use another audio interface ??? big thanks for your time guys, bluesfloyd,