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A wise prudent user would Never have AutoRun enable. With RootKit (http://en.wikipedia.org/wiki/Rootkit) and other similar malicious malware programs if AutoRun is enabled you can unknowingly inadvertently install dangerous malicious malware programs on your Computer. Some of these dangerous malicious malware programs are difficult to detect and almost impossible to remove from a Computer once they installed.
The â€˜Safe Wayâ€™ to have your Computer configured is to never have AutoRun enabled and have your Computer configured so that you always have to navigate to your Viewing/Playing/Recording Software program and then manually select the specific item your desire to View/Play/Record. That way you ensure that you are always fully aware of exactly what it being installed and running on your Computer.