Check it out if you havn't yet.....you can listen for free but your time is limited. I signed up last year (for 1 year) for 50 bux and I'm not sure if they still have this deal but I paid 50 to sign up then they gave me $50 credit towards anything on there site and I can listen as much as I want for the year. Also stuff is cheaper when your a member so I got a bunch of Dead shows from that deal. And they give you a higher quality stream to listen on when your a member to.
They have a ton of Grateful Dead concerts to listen to and you can buy/download all of them. Most are from the late 60s early 70s but they have some up until 91'. They also have 1 Ratdog show along with Phil and Friends and a few Jerry Garcia Band shows. Also 1 Mickey Hart and Plannet Drum set.
Just this week they opened there new video section and right now they have videos of 47 songs between 2 shows by the Grateful Dead.......12/27/77 ..... and 12/31/78. .....I'm just exploring the video section for the first time myself but thought I'd share to
You can sign up for free and listen for 10 hours a week I think.
ps: Theres something from 1 of the Acid Tests to listen to on there....