I'm having a similar problem. Roxio 2012 audio editor, Dell D430 or Dell D830 (same effect), Windows 7 32 bit, 4 gig memory, Intel core 2 dual, and Sigmatel Audio. Nothing else running except AntiVirus (Microsoft Security Essentials)
Every song I record from an external Roland VS-2480 includes a "click" less than 1 second before the music starts. I've never had the problem before, and the only change has been updating from Roxio 10 to Roxio 2012. I can't really edit or remove the click, as it appears to be generated. I've expanded the wave form display (up to 5 or 6 times), looked for a click wave (or any wave form) not directly associated with the music, and I can't really see it. But I can hear it. I've tried deleting things up to the start of the song, but the click seems to remain -- moving closer to the start of the song.
I've been using Roxio related software since the early days of CD burners -- going way back to the original EZ CD Creator, updated many times, and never experienced this particular problem.
So, I'd really like to hear from Roxio. Not another user on the forum. No offense to anyone is intended, but I think Roxio needs to do a little more work on this than just asking for samples.
Appreciate your help on this. If you can't resolve it soon, I'll need to find another product that doesn't generate the click.