Look at your code:
Instantiate(audioObj, transform.position, transform rotation);
^
|
I'm pretty certain that should be a '.' not a space ...
If you look at eteh error message in Visual Studio, it shows you which line and column it found it on. Double clicking the error will take you directly to it, and it will underline the problem area in red. The error message is also pretty clear if you look closely at your code as well.