Complex sentence: Jones abandoned that format in 2001, and WJGO moved to a live Rhythmic Oldies format known as Groovin Oldies 102.9 until March 16th, 2007, when the station changed to its current format "Bob FM".
Split into simpler sentences: Jones abandoned that format in 2001, and WJGO moved to a live Rhythmic Oldies format known as Groovin Oldies 102.9. The station was previously a Rhythmic Oldies format branded as "Groovin' 102.9", until March 16th, 2007, when the station changed to its current format as "Bob FM".