This was posted in the Video forum, but it could be just as useful for audio.

Batchrender Pro for Vegas 4.0 is now available for download.

Info and pricing: http://www.rmtools.se

Features:
- Render one or more Vegas projects to one or more formats easily
- Quickly add multiple Vegas projects to a preset render template
- Load/save batches
- Render regions, optionally naming the rendered file from the region label
- Split render
- Upload rendered files to an FTP server
- Easy to use standard windows interface

Common uses for Batchrender Pro:
- Render your project to separate MPEG2/AC3-files by loading a preset batch
- Render several different projects over night
- Render highlights of your project for the web by rendering regions
- Split big files