helpful links...
sound effects
To the best of our knowledge these sites are all safe, but you should always check any file you download with your anti-virus system before opening or running it.
The Freesound Project - a vast range of sound fx from nightingale song to thunderstorms. Created by enthusiasts and available free in return for a credit.
PacDV - has a range of useful ambience and background sound effects free. The website is sometimes a little flaky.
Sshhtt! - world sound effects including weird ones like a parrot and a dog! All free.
A1 Free Sound Effects - has a quirky collection which is good quality and free for non-commercial use. They also sell commercial rights if required.
TNS Group - offer a free collection of sound fx they believe to be in the public domain.