Possibilities:
- reinstall the software
- buy the dll on http://www.dynamiclink.nl/htmfiles/rframes/info_dll/info_s/2585.htm ($9,95)
- restore the dll from your backup
- contact the author of the audio program
- contact the maker of the dll (seems to be PoINT Software and Services GmbH in Germany).

I should start with simply reinstalling the software.

Hope this helps.


Kees