For those who are interested, I thought I'd list several places where I have found some excellent ambient and electronic music available free on the web. Aside from web pages that offer selected downloads, there are numerous internet based record labels that facilitate the release of actual albums and EPs by various artists. Many of them are quite good, and all of them are FREE. Here they are:
Laidback Electronica: has some great melodic, atmospheric ambient/IDM by artists like Seestrings, lomov, and kratarknathrak. Also worth checking out, if you like beatless ambient, is their release "The Journey Towards Ashand" by Ambient Ashand.
Musictrade: Focuses on more experimental and deep ambient. Has released several compilations and a number of projects by an artist who goes by the name Doc.
Realaudio: focuses on several different styles of electronic music including ambient, breakbeat, and techno, as well as offering several mix albums. Releases by artists like Holger Flinsch, Navarro, and the already mentioned lomov. Has a good ambient compilation called "Liquid Times."
Aerotone: A great label for all kinds of melodic, downtempo electronic music. Their latest release is an excellent compilation called "Soundtrack For Your Wedding." Especially great is the track by Cignol, who has several downloads of his own available here.
Epitonic: A virtual feast of many styles of cool music by artists both well known and unknown. Apparently there is nothing new being added to the sight anymore, but you should find plenty of great stuff to keep you occupied for quite a while.
Mp3blog.ch: Focuses on numerous styles of music, with a strong inclination towards post-rock, but also has a great ambient section. This site focuses more on making people aware of what's out there and offers links to various places where artist's music can be sampled or downloaded. I have found some great ambient/experimental/soundscape albums through this site, such as "Unknown Land Meaning" by Cesare Marilungo, and "The Final Finalist" by Xenoglosia.
Full Code Media: A net label focusing on various kinds of electronic music. Released the above mentioned album by Xenoglosia. I haven't heard any of their other stuff yet.
That's it for now. I'll list more good stuff if I find it. Happy listening! Peace.