It's simple to use and does a very high quality job. I don't think the lack of audio circuitry is a serious problem and it saves you a couple of hundred bucks compared to boards that include audio and offer quality as good as this. Click here to read the full review. We do not support OS releases prior to OS 7.6. Make sure you are using QuickTime version 2.5 or later.
Extension conflicts can cause all sorts of problems.
Third party extensions and control panels should be disabled.