The Black Eyed Peas continue to steamroll their way into the record books this week. The group's "I Gotta Feeling" surpasses Flo Rida's "Low" as the best-selling digital song of all time, according to Nielsen SoundScan.

SoundScan began tracking digital song sales in July of 2003, a little more than two months after Apple launched its popular iTunes Store.

"Feeling," which spent 14 weeks at No. 1 on the Billboard Hot 100 chart last year, has now sold 5,561,000 million digital downloads, ahead of "Low's" 5,536,000. The latter had been the biggest selling song since March 2008, when it trumped Soulja Boy Tell'em's 2007 hit "Crank That."

Presently, the Peas own two out of the top five best-selling digital songs in history. Its other ubiquitous 2009 hit, "Boom Boom Pow," is in fourth place with 5,298,000. Behind Flo Rida is Lady Gaga's "Just Dance" (No. 3 with 5,364,000) and rounding out the top five is Gaga again with "Poker Face" (5,131,000).

Coincidentally, "Boom Boom Pow," "Poker Face," "Just Dance" and "I Gotta Feeling" ranked as the top four singles, respectively, on Billboard's year-end Hot 100 chart last year.