Dem Franchize Boyz latest million sellers.

Want to build buzz on an emerging artist? Just brag about how many ringtones they’ve sold. Since the rap group D4L made headlines by selling more than half a million downloads of their hit single Laffy Taffy, driven by the popularity of the song’s ringtone, releasing self-reported ringtone sales has become all the rage.

Virgin Records is boasting that Dem Franchize Boyz sold more than 1 million master ringtones of four different tracks from their album On Top Of Our Game before it was released on Feb. 7. The album topped the Billboard Top Rap Albums at No. 1, reached No. 2 on the Billboard R&B/Hip-Hop Albums chart and is currently 5th on the Billboard 200, moving 106,600 units in its first week.

Jive Records meanwhile announced T-Pain sold 1.5 million master ringtones between his two hits I’m Spring and I’m In Luv (Wit A Stripper).

Both developments point to the surging sales for master ringtones, which feature actual clips from a song’s master recording, rather than the synthesized version used for polyphonic ringtones.

By way of comparison, the top selling polyphonic ringtone of 2005, according to the Billboard Hot Ringtone Chart, was 50-Cent’s Candy Shop, totaling 1.9 million.