Essentially, this is the MikMod
music playback engine, with the AudioQueue driver
patch applied (link below), and then shoved into
a static library for use with the iPhone SDK.
This basically means that you can easily use
the MikMod music playback engine in your game
Included in the zip file below are two XCode projects;
The first is the libMikMod static library project.
The second is a sample application that shows one
way to use the static library in your application. It
includes notes that explain what changes were made
to a base project in order to get it to build properly.