i've just finished the tracking and mixing of an album that i'm now ready to take somewhere for professional mastering. i've tried to inform myself as much as possible about the best way to prep and deliver the final mixes. after reading a few interesting things on the web about preserving the sonic integrity of the music, i noticed that there seems to be some conjecture as to whether 24-bit data cd-r's should be burned at 1x, 2x, or 4x. (i've always thought that with data there was no difference in the integrity if your burn verified successfully.) for what it's worth, i've already burned cd-r's of the mixes at 4x, and 2x... is it even necessary to do another run at 1x to achieve maximum clarity? i might also note that i'm exporting the mixes as interleaved SDII files (24-bit). (also, i've been using toast with yamaha pro-grade cd-r's to do the transfers.) i'd also like to know if during a slow burn, if your computer goes to sleep or screensaver, will that in turn cause errors? naturally, i'm looking for optimum results, so i'd sincerely appreciate feedback from anyone who knows anything conclusive from their own experience. thanks in advance.