It's a newer rap/r&b song, not getting a ton of playtime here in Detroit, but its catchy as hell and I need to find out who sings it and the song name.

All I can tell you is how some lyrics in the hook go:

"and we stay on the grind... you're dealing with a star, baby"

repeated numerous times.

its not "the grind" by 50 cent is it???

it could be..... not sure though

Nope, its more R&B, kind of like Young Gunz - No Better Love

I finally found out what it is. They're a local Detroit group. Still can't find out where I can buy the song at though.

Black Lagoon - Star

Perhaps this can be helpful

read this article
http://www.metrotimes.com/editorial/story.asp?id=7115

Their first single, the dancehallish �Star,� off their third self-released disc, The Pimp Bones LP, has been getting much love on WJLB-FM (97.9) and WDTJ-FM (105.9), and the album�s been flying off local record store shelves since September.

Perhaps you can contact the writer of the article and they can tell you where to go

Also, the guy below has it.
http://daseckies.tripod.com/

And he is willing to trade... or you can ask him where he bought it.
FYI