::raises hand:: I bought a CD-Wave license. (Though I don't use it much, anymore, since getting Samplitude SE.)
<RANT>
For those who haven't purchased a license, yet use it beyond the 31-day trial: <1> it's a violation of the license, and more importantly <2> it ain't right, plain and simple.
It's one thing to violate licensing requirements (i.e. use cracked or unlicensed software) if there aren't hobbyist/consumer-affordable applications to perform the functions one desires - in those cases, the market has failed to address the needs of a particular user segment, for one reason or another. Not saying it's right or legal, just saying on some level it's understandable.
However, that's simply not the case with CD-Wave or software that addresses our broader editing needs. With the accessibility and affordability of applications like CD-Wave, Audacity, and Samplitude SE (I'm sure there are other affordable hobbyist/consumer-level apps I'm missing both for PC and Mac), there's simply no justification for using unlicensed / cracked software like CD-Wave and WaveLab (two of the most popular apps among tapers).
And with respect to CD-Wave specifically, it's downright peanuts. What's $15 relative to the money we put into our recording gear? To the money we spend on tickets to shows? To the money we spend on drinks in a single set? If only every taper who uses/used CD-Wave regularly paid for their license, well...the author would get one small fraction of the reimbursement he deserves for creating such a handy application (and for licensing it in an open way, rather than crippleware).
In some ways, the license allowing a fully functional, 31-day open demo is analagous to our agreement with musicians who allow open recording. Musicians allow us to record their concerts as long as we don't sell the recordings. We frown upon those who sell recordings. In the case of CD-Wave, the author provides full, unfettered, non-crippled 31-day trial access in return for (very reasonably priced) payment if one decides to use it beyond the trial period. Is breaching this agreement with the CD-Wave author any different than breaching the agreement between musicians and tapers?
</RANT>