Convert say commands into mp3 files, on the fly.
lame - install with brew install lame
wget https://raw.githubusercontent.com/RealLukeMartin/say2mp3/master/say2mp3 -O say2mp3 && chmod +x say2mp3 && mv say2mp3 /usr/local/bin/
say2mp3 "message" name
say2mp3 "Savage" savage
Output: savage.mp3