Complex sentence: In 2010 CNET.com reported that an Australian teenager had gained access to playMPE.com (an industry website used by music labels to share music with radio stations) posing as a music critic, subsequently uploading a number of unreleased albums to the What.cd tracker.
Split into simpler sentences: In 2010 CNET.com reported that an Australian teenager had gained access to playMPE.com (an industry website used by music labels to share music with radio stations). Posing as a music critic, the teen subsequently uploaded a number of unreleased albums to the What.cd tracker.