Virgin Mobile USA and the Universal Music Group are once again working together to bring superphonic ringtones to mobile subscribers. The latest: The carrier inked a second exclusive ringtone deal with the music company.

Today, the companies announced another similar deal that will give the carrier's customers exclusive access to real-music ringtones from G Unit's Lloyd Banks and the Young Buck, two rap artists, for the next three months.

In June, the two companies signed an exclusive 3-month deal that gave Virgin Mobile USA subscribers access to wireless music content from Universal Music Group's "D12 World" -- essentially giving Virgin Mobile subscribers "first dibs" on downloadable superphonic ringtones from Detroit's Dirty Dozen (known as D12), which includes hip-hop star Eminem.

To get the word out about the ringtones to its young customer base, Virgin Mobile USA has launched an ad campaign, in conjunction with the Lloyd Banks' "On Fire" song, on MTV, MTV2 and the hip-hop stations in 15 major markets.