While it is still being researched, the z3ta+.dll file is known to be a part of the rgc:audio z3ta+ Waveshaping Synthesizer module. The Waveshaping Synthesizer element of the module makes z3ta+.dll appear to be part of an authentic program, but it can still be something that causes problems and error messages on a computer! For this reason, it is a good idea to consider a registry scan to determine what may be harming your computer.
Even legitimate programs can have files that cause error messages, and this can happen even to experienced computer users. Often, when new programs are installed (or when older ones are deleted) it may disturb some of the files that are needed to effectively and optimally run the operating system. In severe cases, error messages will sometimes result.
One of the best registry cleaners comes from a company called ZookaWare PC Cleaner. ZookaWare PC Cleaner offers guaranteed service as well as a free scan to determine whether or not their product is even needed.