Is FMS right for my needs?

I work with a Public Television station that currently streams or displays video on our server to a viewer on our site. I'm looking for a service or a product that First, takes our existing library of WMV files and either converts it to FLV or allows it to be played through a viewer, on our web site, or branded to our site.

Also, I need this product or service to constantly automatically look for new WMVs being uploaded to our server, and then encodes it to FLV for viewing on our site. All on either our server or elsewhere.

Is FMS right for me? Can anyone recommend a service that does that, and does not involve advertising?