Yea good question. On the audio overhaul for skyrim detailed instructions page. I took the following to mean than since my load order consisted of core and extend items and I would be using the extended patch I would then need the items listed under step core users not using step core patch. However I may be over thinking it. Get the AOS_2 Main File and the AOS_DLC_Compatibility_Patch optional file. For STEP Core users that are NOT using the STEP Core Patch, also get the following optional files: AOS_Guard_Dialog_Overhaul_Compatibility_PatchAOS_Realistic_Water2_Compatibility_PatchAOS_Unofficial_Skyrim_PatchAOS_Weapons_and_Armor_Fixes_Compatibility_PatchFor STEP Extended users that are NOT using the STEP Extended Patch, also get the following optional files: AOS_Enhanced_Blood_Textures_Compatibility_PatchAOS_Guard_Dialog_Overhaul_Compatibility_PatchAOS_Realistic_Water2_Compatibility_PatchAOS_Unofficial_Skyrim_PatchAOS_Weapons_and_Armor_Fixes_Compatibility_PatchAOS_Wet_and_Cold_Compatibility_Patch