[Bug 28639] Re: Asterisks insists to use native mpg123, not wrapper mpg123 of mpg321.

[Lionel]

There is a good reason : it does not function correctly with mpg123. You can see details here :
http://www.voip-info.org/wiki/view/mpg123

There are some workaround for using other sound players. But the package suggest mpg123 which is the simplest and the only which work out of the box.
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Asterisks insists to use native mpg123, not wrapper mpg123 of mpg321.
https://launchpad.net/malone/bugs/28639