go to your ge avp directory, avpgold\fastfile, put Tex60, Tex61, Snd52, Snd53, into the fastfile folder,
then in your ffl folder, open the text ffinfo
for the textures, put this after the vaults Tex32 info

graphics\Envrnmts\adams_level;Tex60.FFL
graphics\Envrnmts\mult;Tex61.FFL

for sounds, put this after the vaults Snd28 info

sound\Env\adams_level;Snd52.FFL
sound\Env\mult;Snd53.FFL

make sure you have both level rifs in your avpgold\avp_rifs\Custom folder

AvP with a huge THANKS to Aglar for figuring out how to do this