- Download and install mpeg123—note that Asterisk is choosy about using the 123 version given below. This package is necessary to play MP3 files for features such as custom music on hold. This is an optional package but installing it is highly recommended.
tar -zxvf mpg123-0.59r.tar.gz # cd mpg123-0.59r
Make sure that mpg123 is in the /usr/bin directory. If not, create a symbolic link to it from /usr/bin/mpg123.