Complex sentence: In the 2000s he was the CEO of XYTAR Digital systems, a company located on Taylor Boulevard in Millbrae, California, a company which handled remastering of soundtracks which had done work for Ballet San Jose.
Split into simpler sentences: In the 2000s he was the CEO of Xytar Digital systems, a company located on Taylor Boulevard in Millbrae, California. Xytar handled remastering of soundtracks, and had done work for Ballet San Jose.