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-An
I 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.