Traffic monetizatioon works approximately like this:

Advertisers got to Google or other Search Engine and buy traffic.
You can check what advertisers pay for traffic related to "russian music" here http://uv.bidtool.overture.com/d/search/tools/bidtool/
You will notice top advertiser pays 51 cent per click.
So when someone goes to google, andsearches for "rusian music', gogle will return results and the ads of the advertisers. When those ads are clicked, google charges the advertisers according to their bids.

Now, if you have russianmusic.com domain name. Obviously paople who type in this domain are looking for russian music.
As this traffic is very targeted, it is thought to be the same kind of traffic that you get from SEs when somenoe searches for "russian music" there.

What sedo.us does, it has a contract with google. So, if russianmusic.com is parked on sedo.us, it will display links of the Google's advertisers.
When someone clicks on a link, Google charges it's advertiser and gives 50% of proffits to sedo.us. Sedo.us then gives 50% of it's proffit, which is 25% of what advertiser paid originaly to the owner of the domain.

Google will not partner with you directly unless you have very high traffic therefore it is not an option.