The fact that a lot of PS3 owners own PS3s that can't play PS2 games sucks. Stupid move on Sony's part. But if the only PS2 game you wanted to play was Singstar, read on!
First announced earlier this year, Sony Europe have announced that the title update allowing SingStar PS3 users to "hot swap" their PS2 SingStar discs is ready for download. In other words, even if you own a PS3 that doesn't support backwards-compatibility, you'll be able to use your PS2 SingStars on your PS3 provided you boot up the PS3 version first.