in the Dashboards (MWG 7) > Media Type Statistics "Media Types by Bytes".
Or create ad additional logfile, where you woudl just log the Media Types for Streaming.
The Dashboard is very generic- it only gives you the stats not the user stats that are accessing these sites . Is there an XML that can do this or a way to customize the dashboard to give me these stats?
I think for more specific reports Web Reporter may be helpful. The Dashboard is only used to give a generic overview as you stated.