You probably already know this - since you love buying your music at Dada.net - but online sales of music were at an all-time high last year!

Billboard magazine is reporting that over 1.5 billion units of music (albums, singles, music videos and digital tracks) were sold in 2008 - that's up 10.5% over 2007! Digital tracks by themselves sold over one billion units - a 27% gain over last year - while digital albums grew 32% to 65.8 million units.

So, what were music fans like you downloading? Over here at Dada.net, the three biggest tracks of 2008 were "Bleeding Love" by Leona Lewis (pictured left), "I Kissed A Girl" by Katy Perry and Lil Wayne's "Lollipop."

Across the board, Billboard reports that "Bleeding Love" was also the year's biggest digital song with 3.4 million paid downloads while Rihanna was 2008's top digital track selling artist. (Rihanna also had Dada.net's 10th most popular download of the year with "Disturbia").

Lil Wayne also had a huge year. He scored 2008's biggest selling album with Tha Carter III and his "Lollipop," in addition to being the third most popular song at Dada.net, was the year's biggest ringtone.