My personnal setup is a Behringer ucg102 usb guitar input which I use with Native Instruments guitar rig5, guitar rig has 2 tape decks which record a WAV file when selected, it can be clean or with effects depending on your selection. You can record on tapedeck1, play it back and jam on top, the UCG102 works great with Rocksmith (no cable patch) and is just recognized as a sound card and can be picked up for £10 on Ebay and its a fantastic piece of kit. NI guitar rig is great , it has all the amp, effects units and preset models you could wish for and plugs into Ableton, Acid, Cubase, Pro tools and DAW's and is stand alone also. I believe the Rocksmith guitar models are based on "Amplitube" which does the same thing as Guitar rig. My personnal favourite is Guitar rig though for ease of use and layout. You just need ASIO4ALL installed, the guitar rig software and Behringer software, then Select Behringer in you Windows playback/record options, plug it in and your good to go. One thing I intend to look into is VAC virtual audio cable to see if its posible to take the audio stream from Rocksmith to a DAW or even windows recorder? Just putting my 2 cents worth in. Have a search.