I haven't found any other Windows software so far that can burn disc-at-once CDs from the same type of CUE sheet used by CDRWIN. Since I'm now using a newer CD writer than CDRWIN supports, I had to give it up, and am now using Adobe Audition. It uses an XML-based file which has all the capabilities of a CUE file, but in a different format.
Actually what Audition does when it burns a CD based on one of these "CDL" files is to go to the indicated source wave file(s) and create a series of temporary, hidden wave files from which it then burns the CD. That requires more disk space, but it allows the program to do several things that CDRWIN couldn't: It can start a recorded track somewhere after the start of a WAV file, it can record the parts of a large WAV file onto a CD out of order if you want, and it can repeat any part(s) of the contents of a WAV file.
I've also verified that the tracks it creates are seamless.