Compressing audio files simlar to transfer from server to client

Compressing audio files simlar to transfer from server to client

In my project, I need to be able to compress small audio files so that it
can be transferred easily from server to the client. I found We Chat uses
audio compression closest to my requirement. But I couldn't find ways of
doing it
I'm able to write code for image compression by reducing resolution and
clarity. What should I try here ? combine two frames into one etc.
Streaming is definitely possible if two frames are mixed into one. I want
to know if there are any well developed libraries to do the same. I'm easy
on the format until client side is able to read it. I also want to know if
streaming is possible in compressed format.