Carrie Underwood had no trouble winning over Some Hearts — close to 6 million of them — with her debut album, and she’s sitting pretty at No. 48 after 96 weeks. The Idol winner’s second effort, Carnival Ride, is due Oct. 23; first single ”So Small” is already a top 20 hit on the country charts…. Fergie’s The Dutchess recently hit a chart peak of No. 2 a full year after its debut. It’s yielded four top 10 singles (three of which reached No. 1), and an upcoming fifth track (”Clumsy”) should keep it from stumbling anytime soon…. Country/pop act Rascal Flatts notched 2006’s biggest opening when Me and My Gang sold 722,000 units in its first week. Over 4 million copies later, it’s still ensconced at No. 50. Surely, that bodes well for their latest, Still Feels Good, arriving Sept. 25…. And finally, who is Flyleaf, and why is their album still at No. 64 after 78 weeks? Credit fans of this hard-touring, under-the-radar Christian rock group, who continue to purchase their self-titled debut album. A repackaged CD/DVD featuring interviews with the band and acoustic versions of five songs is due Oct. 30.