Weird Al is using a small marketing site to pimp the song, complete with a music video and a download link (yes, of course it's free), as well as the upcoming album the song is featured on.
Grant at TDMW cites a favorite line of Christopher Springman at Public Knowledge: "Cause you start out stealing songs/then you're robbing liquor stores/and selling crack/and running over schoolkids with your car." Personally, I don't think the record labels care where you're getting your cash, just as long as you use it to pay their outlandish monopoly prices.
Feel free to grab the song, as the RIAA can't nail you for downloading this one. At least, I think.