I just updated the MXMModule library for PureBasic 4 (Windows only), including unicode support. It can be found here: www.purebasic.com/MXMModule.zip . It's a minimal music module lib, which can play something for less than 9kb (unpacked).
Have fun !
MxmModule for PureBasic 4
Be carefull with modules files in general, if the module engine (here mxm) is not in "paranoia mode", some commands can make the engine indefinitely, open your mod with your favorite soundtracker editor and check for commands like pattern jump and pattern break (OpenModplug display the name of the command in case you don't know them all).