http://www.pandora.com/It is called Pandora Radio. It's a radio music website, but it plays the music you like! It is free, and all you need is an email address. Once you have an account, just type in your favorite artists (Jefferson Airplane, of course), and it will play their music, and also similar bands as well.
It is totally legal from what I understand. They pay a price whenever they play a particular song. This, of course, means you can't listen to exactly to what you want at that moment, and you can only skip a few songs an hour. However, it does a good job on picking songs that are similar to your favorite artists.
A great way to hear new music within the same genre.
. I'll check it out asap....in the meantime, you might be interested in a similar site....only for true psychedelic fans of course...
.....anyway, did you get to check out the link I sent above??! It's a good international psych sound with plenty of sound samples and psychedelic goodies!! 
