The copyright debate is on again, with Warner Music Group withholding its content from Nokia's new music Web site due to concerns about illegal downloads.

The Wall Street Journal reported Friday in its online edition that a copyright-related argument has erupted between Warner Music Group Corp and Nokia Corp, with the former choosing not to sell its music through the newly launched Nokia Music Store Web site.

Warner is reportedly upset because another Nokia service, the file-sharing Web site called Mosh, allegedly allows users to distribute copyrighted material, people “familiar with the matter” told the Journal.

Nokia spokesman Kari Tuutti confirmed the situation to the Journal, that Warner was withholding its music content from Nokia's new music-downloading service. “We are continuing discussions with [Warner]...and we are hopeful that Warner will be part of Nokia Music Store in the future,” he said.

The paper notes that Warner is the world's third-largest record label, ranking in revenue after Vivendi SA's Universal Music Group and Sony BMG Music Entertainment, a joint venture of Sony Corp. and Bertelsmann AG.

Finnish cell phone-maker Nokia meanwhile told the Journal that it uses automated software to monitor the site for copyrighted material and that content is only removed when consumers complain.

“We are implementing all possible systems to prevent copyrighted material being uploaded to Mosh,” Tuutti told the paper.

Tuutti said Mosh uses “fingerprint” technology from U.S. firm Audible Magic, which scans and checks the files before they are downloaded to the site, reports Reuters.

The Wall Street Journal further reported that digital versions of J. K. Rowling's “Harry Potter and the Sorcerer's Stone” as well as a portion of The Beatles' “Girl” were available Thursday on Mosh. Both materials are copyrighted.