Complex sentence: At the height of file sharing service Napster's popularity, Bronfman was a leading opponent of the illegal use of P2P technology and, as CEO of Universal, helped lead the music industry's opposition to Napster, likening it to slavery and Soviet communism.
Split into simpler sentences: At the height of file sharing service Napster's popularity, Bronfman was a leading opponent of the illegal use of peer-to-peer technology. As CEO of Universal, he helped lead the music industry's opposition to Napster, likening it to slavery and Soviet communism.