Resolves issue with MP3 framing where the remote server was disconnecting us due to bad MP3 sync. The LAME encoder was sending partial 20 byte MP3 frames initiall, then following with a 144 byte array which contained the remainder of the first frame and the header of the next frame. Adjusted the MP3SilenceGenerator to only emit complete MP3 frames.
This should be the final commit for this feature, pending merge back into master branch.