Complex sentence: LaFontaine is reviving an idea for a sitcom starring the New Main Street Singers, "Supreme Folk", in which they play Supreme Court judges by day, and folk singers sharing a house together by night.
Split into simpler sentences: LaFontaine is reviving an idea for a sitcom starring the New Main Street Singers. He wants to call it "Supreme Folk" and have each play Supreme Court judges by day, folk singers sharing a house by night.