Rumors have been swirling around the Internet that Sony is going to be joining EMI to bring DRM-free music to Apple’s iTunes Plus service. The service is a higher-MP3-quality DRM-free option that exists within the Apple iTunes store. Thus far EMI is the only major label involved with the service, so the addition of Sony would be a major incentive for other labels to jump onboard. Still, this is currently just a rumor so stay tuned.