Do you have any source code for the MP3 or OGG playing for OpenAL? I have been unable to play any musics with OpenAL on Lazarus be it just Win32.

But i'm pretty happy about BASS at the moment. It should work on many platforms, but best of all, it's easy to use and supports wide variety of formats. I do like the MOD/XM formats aswell and they are played as easily as WAV with BASS, on many channels, and with 3D pos if needed.

And best of all, it's free for non commercial projects like most games i make should be.