We're getting more and more details of Lil Wayne's 50 plus million dollar lawsuit against Birdman.

Yesterday, we learned Wayne is accusing Baby of losing/stealing $70 million of the advance Universal gave the pair for Young Money, and is asking the court to demand Birdman provide receipts for the missing cash.

Today, we've learned that Wayne is furious Birdman allowed Tyga out of his Young Money contract -- which ultimately resulted in T-Raww signing a deal with Kanye West's G.O.O.D. Music.

Since Wayne owns 49 percent of Young Money he believes he should have been consulted on releasing Tyga, even if Birdman would have ultimately vetoed him.

Between Kanye's interest and Baby and Wayne fighting over him, Tyga's gotta be feeling pretty wanted.