www.freesoundsfx.com offers free sound effects for your project (commercial or not). The site is growing day by day.
Although you are not allowed to share the files you are very welcome to share the website address to your friends and help us to grow.
Come and see for your self and then post here a comment.
Again is time for me to pay a tribute to this great community that helped me with Blender( I’m using Blender for graphics only).
One thing that you should be aware:
EVERY SINGLE SOUND FROM MY SITE IS RECORDED BY ME, this will ensure that you will have no problems with the law.