Hey thanks for the links. All I want to do here is get a simple dB reading from various devices....maybe monitor ambient dB levels around the house. I have a good Sennhauser mic, and a good sound card. I sure don't want to pay $300 for the prog, but I'm open for suggestions.
The problem is I want to check noise sources under 50dB. Most cheap hardware meters won't go below 50dB.