I use sox to chunk out audio segments from a larger file. Mainly because Audacity seems to only save 16 bit formats (or less). Sox lets you retain a 24 bit version until you use Audacity to apply EQ, hard limit, normalize, and other stuff. And if you need to do one thing a lot of times sox is more scriptable. Not for the meak, but an option. And you can be precise on the SBE issue. You can do it in Audacity to, but you've got to be aware of it, and use those time things at the bottom. Since click and drag doesn't align with 1/75 second intervals by itself. At least not in the version I have. And/or at my user level.