after long hours on google
if someone else are interrested
for find a music for zone
http://opsound.org
(ps some mp3 are very stange
for sound effect its very very poor
http://www.sound-fishing.net/bruitages.htm (sorry but in french and nothink about copyright )
http://freesoundfiles.tintagel.net/Audio/ ( nothing about copyright )
another ask , is it possible in next version oz to put local sound area like light sources ? because have all my room under ground, an can not put sound inside (ps no emmergency i dont really work on sound before one or 2 month
))