Well I've taken the plunge and signed up for the 30 day free trial of Access Everything and I am impressed so far. It's recommending music I like already and i've only been using it for about an hour so far. I guess it's looked at my ratings of my own library along with playcount to come up with a guesstimate of my tastes.
Comments
music can be streamed
video content streams to on an appletv.
well it's called progressive download, but it is essentially streaming to the layperson.
http://www.blinkboxmusic.com/welcome/welcome
Might try All-Access but I'm not really sure what it offers vs playing tunes for free through youtube