any recommendations for software for capturing streaming video.
I used Snapz Pro demo which was good but the full version is too expensive.
any others I find seem to need my passwords to activate the audio capture features
I'm not sure what stream you're trying to capture, but VLC (free/OSS) has great things in it to open streams (mostly RTP and RTSP) and output to a file, or transcode)
If you're looking for more of a "screen recorder" I've used iShowU. It's $29.