The finale of MTV's ''The Ashlee Simpson Show'' last week sent her fans back to the record store, where they restored her to the top of the Billboard album chart. After a one-week interruption, her ''Autobiography'' reclaimed the top spot and sold another 286,000 copies, according to SoundScan. Last week's champ, hits compilation ''NOW That's What I Call Music! Vol. 16,'' slipped to second place on sales of 276,000. Climbing one slot each were Jimmy Buffett's ''License to Chill'' (No. 3, with sales of 101,000 copies), Usher's ''Confessions'' (No. 4, 96,000 discs), and Gretchen Wilson's ''Here for the Party'' (No. 5, 89,000 sold).
Avril Lavigne's ''Under My Skin'' and Prince's ''Musicology'' both returned to the top 10, with ''Skin'' rising five places to No. 6 and ''Musicology'' jumping eight notches to No. 7. Up two to No. 8 was Big & Rich's ''Horse of a Different Color.'' The self-titled album by Los Lonely Boys climbed three rungs to No. 9. Maroon 5's ''Songs About Jane'' rose seven spots to land at No. 10.