Highest selling digital songs & ringtones in the US, 2000-2009

"Highest certified digital song:
Group: Coldplay’s “Viva La Vida” – 3x multi-Platinum (EMI/Capitol, 2008) and The Fray’s “How to Save a Life” – 3x multi-Platinum (Sony/Epic, 2006)
Male solo artist: Flo Rida’s “Low” – 5x multi-Platinum (Warner/Atlantic, 2008)
Female solo artist: Lady Gaga’s “Just Dance” – 4x multi-Platinum (UMG/Interscope, 2008) and Taylor Swift’s “Love Story” – 4x multi-Platinum (Big Machine, 2008)

Highest certified master ringtone:
Group: D4L’s “Laffy Taffy” – 3x multi-Platinum (Atlantic, 2006), Hinder’s “Lips of an Angel” – 3x multi-Platinum (Universal Records, 2006), and Shop Boyz’ “Party Like a Rockstar” –3x multi-Platinum (Universal, 2007)
Male solo artist: Lil Wayne’s “Lollipop” – 5x multi-Platinum (Universal/Cash Money, 2008)
Female solo artist: Beyonce’s “Irreplaceable” – 3x multi-Platinum (Sony/Columbia, 2006)"
Source: RIAA Press Release, 17th February 2010
Note - 'Platinum' = 1 million units