Question : Are there any tools out there that can scan your network to see if anyone is streaming audio/video?

Are there any tools out there that can scan your network to see if anyone is streaming audio/video?  I'm noticing bandwidth being sucked up throughout the day and I would like to see if streaming is causing the problem.
Also, are there products out there that allow you to disable this from happening?  I'm assuming you could probably get a firewall with these types of features.

Answer : Are there any tools out there that can scan your network to see if anyone is streaming audio/video?

If you have a Firebox X core then you can just install the log viewer and report server.  Report Manager pulls data from the logs and you'll be able to run reports on all ports, services, etc.  Let me know if you need assistance setting it up.