After installing the OSS sound, I successfully tested wav, mp3 and
midi. Some days later I purchased the license. The next time I
attempted to play a midi file I received a high pitch sound.
I do not think the following information is important but I present it
anyway. To allow a user other then root to play music I had to change
the protection of the /dev/audio*, ./dev/dsp* and the /dev/mixer* files
to 666. I do not know of any other changes I made which may be relevant