Glad it works for you too. Besides the music, the only other thing I found that doesn't work is on the 'Help and Manuals' dialog, on the 'Websites' column everything there will lock the process - I presume because there needs to be a way to open a browser that is not implemented for OS/2.
I'm using KSoftSeq for MIDI, but maybe SDL doesn't recognize MIDI on OS/2?
Regards,