This full frame LD release also has mono sound and is a bit cheaper to come by than the 1995 remaster.
http://www.lddb.com/laserdisc/04914/ID5239VE/American-Werewolf-in-London-AnI have that one, but my way of ripping laserdiscs sucks, even if just for audio. The 1995 laserdisc was made by the same company as the 1997 DVD, which is my source for audio. The audio was stretched to 5.1, but I compressed it down to mono using Handbrake. Sadly, it’s as close as I’m gonna get for now.
Here is a tip just in case the audio compressed down to mono is some how a bit wrong.
Get Audacity (free software). Make sure the sample rate of the project is the same as Blu Ray Audio (44100 khz or more probably much more) for saving. get ffmpeg plugin for the program.
import the Vob files containing the 5.1 audio into audacity after you will have 5 mono tracks. But Audacity will treat the project as a mono project and mix the 5.1 audio uncompressed to a single mono track. Save as a Wav file at the matched sample rate as the blu ray.
Hope that helps you can then synch it to the blu ray audio and delete that audio and use the other track.