Beepster- I may be misunderstanding what you're trying to do but you've already got X2
1) Open X2, close QuickStart, Press Ctrl-N for a new un-named project
2) File, import audio cd, select the tracks you want and import. each will go to a seperate track in sonar
3) If tracks aren't already named, name them as you want the wav files named.
4) export, choose tracks as source, 16-bit/44.1 if you want to keep them same resolution
5) choose location and export