Batch normalizing/end clip?

Hi,

Anyone know a program that does batch normalizing? Also a nice plus would be a feature to clip the silence off the end of the sample.

Freeware would rule, but commercial suggestions are taken into account.

Sorry if this has come up before, I've tried several times to search the topics but didn't come across a topic about this.

Awave has a Batch Convert that includes normalization and an end silence trimming threshold.

http://mediasoftware.sonypictures.com/products/showproduct.asp?PID=478
I use this alot also.

Both products are commercial and support direct x plugins while converting.