rizzuto

I have a 94 integra and I let a buddy drive it... he shift to 4th just riding and heard a loud snap... I have been working 12 hour days so haven't had time to look but have Sunday off so wanna fix it...so what is happenin is, I can start the car but it won't come out of 4th gear I can move the shifter all around but won't change gears.. and when I tried to push it to move it it want to pop start with the clutch out or in .. it just has a loud clunk every time it spins.. like a warped rotor but clank not a tisk... the only thing I'm thinking is it starts fine and it moves so clutch should be fine... so what do you guys think linkage or should I try to find a new tranny?