Bad news, sports fans. Well, to be specific, DJ Hero fans. Anyhow, it looks like you won’t be able to use the turntable controller on any other video game. Why you’d want to use the turntable when playing, say, Street Fighter IV, I don’t know.
This is really only applicable if you had planned to buy DJ Hero, then buy Scratch: The Ultimate DJ without its turntable. One of the DJ Hero devs told Destructoid that any game that could use the turntable would necessarily be a ripoff.
But yeah, the turntable only works on DJ Hero. You don’t send me flowers!