workaround: put music in the sounds folder. It works but ... <img src="smileys/smiley19.gif" border="0" align="middle" />
In r-154 (beta) The problem is corrected as long as the volume is never turned below -100db or so.. (good enough for any practical reason ...)
i have a logarithmic volume control slider that returns even "-infinity". When so the volume never can be set higher again.
With sounds everything is OK!