You might be able to slow the [artist id="30064"]Black Eyed Peas[/artist] down, but you can't stop them. The future-funk foursome notched another major career milestone this week when their hit "I Gotta Feeling" surpassed Flo Rida's "Low" as the best-selling digital song of all time.

According to Billboard, Nielsen SoundScan reports that the celebratory tune has sold 5,561,000 downloads, which puts it ahead of the 5,536,00 sold by "Low." SoundScan started tracking digital song sales in July 2003.

The feat is not surprising, considering that "Feeling" spent 14 weeks at #1 on the Billboard Hot 100 charts last year. Flo Rida had held the title since March 2008, when it beat another inescapable tune, Soulja Boy Tell'em's 2007 hit, "Crank That."

"Feeling" takes its place in the top 5 best-selling digital downloads of all time, along with another Peas tune, the equally ubiquitous 2009 track "Boom Boom Pow," which is in the #4 slot at 5,298,000. Moving back to #3 on the tally is Lady Gaga's "Just Dance" (5,364,000), followed by another Gaga smash, "Poker Face" at #5 (5,131,000).

In keeping with their world-reigning status, the Peas have signed up alongside Shakira, Alicia Keys and John Legend to help kick off the [article id="1634219"]2010 FIFA World Cup soccer tournament[/article]. They will perform at the launch on June 10 at the Orlando Stadium in Soweto/Johannesburg, South Africa. Also on the bill are Malian duo Amadou & Mariam, Beninese singer Angelique Kidjo and South African rockers BLK JKS. The opening celebration will take place on the eve of the first match in what is one of the most widely viewed sporting events on the planet.