How will you be getting the signal from your TT/system to your PC? If you don't have anything I recommend the Behringer UFO202 ($33 at Amazon). It's a USB connected device that's a phono preamp, analog to digital converter and digital to analog converter. It's a plug and play device that requires no software to operate and includes Audacity as part of the included free software. If you don't need the phono preamp section get the Behringer UCA202 ($28 at Amazon). It's the the same thing minus the phono preamp.