This news was sent in today, which sounds like a viable option for projects looking for sound assets:
Game sound effects creator indiesfx.co.uk have announced a new sound effects collection. The new collection, entitled Atmosphere, features over 70Mb of long looping ambient effects, from typical rain, wind and fire to indoor sounds such as factory noise. The high quality stereo files seamlessly loop without obvious repitition and are ideal for backgrounds in a wide variety of indoor and outdoor environments. Like any IndieSFX sound set, S011C-Atmosphere is available on CD-ROM or instant download for $24. Visit www.indiesfx.co.uk for further information.
Info on the licensing can be found here.