As far as I know, no (at least not for sampled sound, there's the Midi API but that's for a different purpose). What is possible is that this a bug with the apple implementation (perhaps a resource is getting unloaded or the values aren't getting updated correctly). Have you tried debugging/stepping through your code to try and see where something could possibly be going wrong?
If you're feeling bold, you can use JNI to provide the functionality you need, but this would amount to basically the same thing as using 3rd party libraries, and you will also need custom native code for every system your program is going to be running on. It's much easier to use a 3rd party library.