Chuck Heffner has never been the record industry’s biggest customer. The 37-year-old Cincinnati resident owns a mere 60 CDs, most of them secondhand. But in the past few months, Heffner, a technical manager at Cincinnati’s Convergys Corporation by day, has become a thorn in the side of the major record labels. As record companies consider-and, Heffner alleges, experiment with-copy protection schemes, he’s been keeping a list.

At Heffner’s Web site, www.fatchucks.com, music fans can find out which CDs cannot be converted to MP3s, and which disks won’t play on their computers’ CD drives.