I have a Denon TT with an RCA cable with the right and left plugs. I have an Asus Xonar U7 external sound card. Can I use it to record from the TT to a laptop computer? If so, what do I need to make that happen? I am rather new to this and need some advice. I also have a Berhringer UCA222 to act as a USB preamp between the RCA cable and the computer. It does work and I have done some recording but am not thrilled with the result. Is this preamp all that is needed? That is, is the Xonar superfluous for recording or would it produce a better recorded sound? Thanks for any help.