The audio is available in Dolby 5.1 and DTS 5.1 surround sound, with an average bitrate of 384 kbps.
The Lost World: Jurassic Park, directed by Steven Spielberg, is indeed available on the Internet Archive. Here's a brief report:
You can access the movie on the Internet Archive website: https://archive.org/details/TheLostWorldJurassicPark1997
The movie is available to stream and download for free on the Internet Archive.