Complex sentence: On September 2,2012, the The Lost 45s program hosted by Barry Scott returned to WROR (it had previously aired the show for several months in 2001); the program aired on WODS before its format change.
Split into simpler sentences: On September 2,2012, the The Lost 45s program hosted by Barry Scott returned to WROR. It had previously aired the show for several months in 2001 and the program aired on WODS before its format change.