mxcl/homebrew — pull request #15788 by holman (2012-10-31 23:11:01+00:00)
Title: Enable m4a support in mpd

mpd out of the box can't play m4a files. Since Homebrew is used on OS X, and a lot of Mac users are bound to have lots of music purchased from iTunes, it makes sense to install mpd with all the dependencies necessary to play iTunes-purchased music.

For reference, this strategy was described in more detail in [this helpful blog post](http://onethingwell.org/post/16355956926/mpd-apple-lossless-os-x).