Move the soundmanager update code back to the main loop, just prior to updating all the SGSubsystems. Hopefuly this silves the sound problem.

src/Main/main.cxx

@@ -481,6 +481,8 @@ static void fgMainLoop( void ) {
             "Elapsed time is zero ... we're zinging" );
     }
 
+    SGSoundMgr *smgr = globals->get_soundmgr();
+    smgr->update(delta_time_sec);
     globals->get_subsystem_mgr()->update(delta_time_sec);
 
     //

src/Sound/fg_fx.cxx

@@ -137,7 +137,10 @@ FGFX::update (double dt)
         return;
     }
 
+#if 0
+    // moved back to the mainloop to prevent audio problems
     smgr->update(dt);
+#endif
     update_pos_and_orientation(smgr, dt);
 
     // command sound manger