Complex sentence: In 2013, Hauraki changed its music content playing modern rock and alternative music from the last 25 years, also changed their positioning statement to "It's Different" to coincide with their change in format.
Split into simpler sentences: In 2013, Hauraki changed its music content playing modern rock and alternative music from the last 25 years. They also changed their positioning statement to "It's Different" to coincide with their change in format.