z3ta+.dll is a file that belongs to the Waveshaping Synthesizer program. This program will take sound waves and distort them to sound like something different. If you have this program installed onto your computer, and this file has been flagged with an error attached to it, then you most likely are having a problem with your registry. Registry errors happen with some regularity and when you install or delete programs, it can happen even more often.
You can combat these errors by investing in a solid, reputable registry cleaner. Now, there are other registry cleaners on the market, but they do not carry a 100% error removal guarantee. ZookaWare, the makers of ZookaWare PC Cleaner, is so certain you will be satisfied with your purchase that they offer this guarantee. If you are not completely satisfied, you can return your certificate for a full refund.