What specific audio clips are you looking for?
"Audio" is a pretty wide category.
Also, if you are referring, say to the SFX files included in some versions of PrE, please list the version, that you are using, and the OS version, that you are running it on.
If you are looking for other sources, beyond Adobe, this article lists many - some are free, and some for-pay: http://forums.adobe.com/message/3322049#3322049
Some of those sources might no longer be around, and I am sure that there are many more, that are not mentioned. I have not used all, but have relied on several in the past. I have also purchased many SFX libraries from various sources.
Good luck, and let us know a bit more please.