In Ludacris’s song Pass out he said this album went Diamond…?

How did Luda say his album went diamond when you record all the songs before you get record sales. Pass Out is on Red Light District..
He said he went diamond on this album

ludacris – Pass Out – The Red Light District

1.Ludacris – The Red Light District – Intro 2. Ludacris – The Red Light District – Number One Spot 3. Ludacris – The Red Light District – Get Back 4. Ludacris – The Red Light District – Put Your Money (Feat. DMX) 5. Ludacris – The Red Light District – Blueberry Yum Yum (Feat. Sleep [...]