There are numerous companies and people doing this for free, google it as individuals are broadcasting over the net as well as small companies and sites, give them a try. It will also depend on your broadband width. Another option is USB type converters with an antenna which will give you free view and some satellite channels if the area you are in is not to built up.
I personally use an elgato on my mac and its clear as a bell.
Give google a good look and good luck,
Ter
