There is an existing standard that Khronos manage called "OpenSL" (SL==Sound Library) - and it has a version called "OpenSL-ES" that is intended for the mobile marketplace (just as OpenGL-ES is for graphics).  However OpenSL is not widely used - although OpenSL-ES is becoming popular for some cellphone applications.  OpenSL also lacks many of the higher level features present in the "wish list" for games and simulation.
 
There is an existing standard that Khronos manage called "OpenSL" (SL==Sound Library) - and it has a version called "OpenSL-ES" that is intended for the mobile marketplace (just as OpenGL-ES is for graphics).  However OpenSL is not widely used - although OpenSL-ES is becoming popular for some cellphone applications.  OpenSL also lacks many of the higher level features present in the "wish list" for games and simulation.