Mediabase, the radio industry's leading airplay monitoring service, has released its year-end charts featuring the most played songs, artists and record labels of 2006. Here is a list of the winners at each radio format, along with the top 20 most played artists, and leading record labels, by format.

Overall: Mary J. Blige/Be Without You (Geffen)

Top 40: Natasha Bedingfield/Unwritten (Epic)

Rhythmic: Cassie/Me & U (Next Selection/Bad Boy/Atlantic)

Urban: Mary J. Blige/Be Without You (Geffen)

Urban AC: Anthony Hamilton/Can't Let Go (So So Def/Arista/Zomba)

Country: Rascal Flatts/What Hurts the Most (Lyric Street)

Smooth Jazz: Paul Brown/Winelight (GRP/VMG)

AC: James Blunt/You're Beautiful (Custard/Atlantic)

Hot AC: Fray/Over My Head (Cable Car) (Epic)

Rock: Shinedown/Save Me (Atlantic)

Active Rock: Three Days Grace/Animal I Have Become (Jive/Zomba)

Alternative: Red Hot Chili Peppers/Dani California (Warner Bros.)

Triple A: Jack Johnson/Upside Down (Brushfire/Universal Republic)

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