Help understanding negative feedback & bias design on audio amplifier
R1 and R2 are the usual resistors, and control the gain. 

R3/C1 reduce the gain above (???work out the frequency yourself, since you didn't give the values) probably to improve HF stability. 

C4 and C5, in a change from opamp practice to audio amp practice, lets the input pins take care of their own DC biassing.