Despite his opposition in the past, Warner Music Group (WMG) Chief Edgar Bronfman Jr. said on Tuesday at the Goldman Sachs Communacopia conference that there is a possibility that WMG will sell digital music without copy protection. Bronfman said that while he did not see a world without digital rights management (DRM), there is a possibility of certain business models working without DRM software, which prevents music fans from sharing songs.

"DRM is here to stay, whether it's here to stay on every business model in the music business is open to question," he said, according to Reuters.

In April, EMI Group became the first major label to agree to drop DRM, and Universal Music Group is experimenting with DRM-free sales now. While Warner has not dropped DRM, it is testing the waters with a company called Lala.com to sell songs without DRM that can be directly uploaded to Apple's iPod, says Reuters. But once the music is uploaded to an iPod, it cannot be transferred to any other player.