Bluemars.org Save
Featuring two streams from a large catalog of electronic and ambient music.
http://www.bluemars.org/   

DownTempo.org Save
Downtempo music news and featuring the ambient music station, Afternoon Nap.
http://www.downtempo.org/   

Epiphany Corporation Save
High-bandwidth mellow, ambient, trippy, groove and downtempo music stream.
http://www.epiphanycorp.com/   

Musical Starstreams Save
On-air and online radio show playing ambient, dub, and downtempo music streams.
http://www.starstreams.com/   

Sleepbot Environmental Broadcast Save
Peaceful streaming audio featuring a random cycling of some of the most sleep-worthy tracks ever created.
http://www.sleepbot.com/ambience/broa...   

SomaFM Save
Ambient, downtempo and chill beats from well known and unknown artists.
http://somafm.com/   

Static Beats Save
Ambient, IDM and electronica streaming broadcast.
http://www.staticbeats.com/   

The Mobius Save
Web companion site to 'The Mobius,' an Atlanta based radio show that features ambient, dub, trip hop and IDM. With on-demand streams of past shows.
http://www.themobius.net/   

VoyagerRadio Save
Station broadcasts downtempo, chillout, dub and drum 'n' bass.
http://www.voyagerradio.com/   

real:time Save
Free online stream hosted by Shadow Records recording artist Saru featuring trip hop, downtempo, ambient dub, illbient and electronica.
http://www.realtime365.com/   

Forum - Usenet rec.music.ambient

Help build the largest human-edited directory of the web
Suggest a site | Open Directory Project | Become an editor