um... music sales are actually down, year after year. You might be confused with downloads, which is up, but that is still a fraction of total sales.
in 2004 there were about 650,000,000 cds sold, or approximately 6.5 billion tracks (probably a bit more as that is only 10 tracks and album)
in 2005 it sank to 610,000,000 cds, or 6.1 billion tracks, down about 400 millon tracks.
downloads went from about 135 million to about 330 million, or up about 200 million.
simple math gets net loss of about 200 million tracks. Music sales havn't been up in nearly a decade.
no matter how you compare it stealing is stealing, whether its someone's hard work on a vehicle, an artists soul in a painting, or a composers music. How its copied is irrelevant. just because a file is easier to copy and distribute than a car, it's still wrong.