Ok, I'm usually really good with mods and installation but for some reason I'm having issues with Jammy's Furniture Mod. Currently I'm playing with 1.7.4 so I did all the stuff for forge and have a forge profile for 1.6.2 and I installed Mo'Creatures (1.6.2) and for laughs I installed Jammy's too, but not before testing the mo'creatures first. Before I installed Jammy's there was sound, so much so that I turned it down! But after I added Jammy's to the mods folder no sound what so ever. I messed with the sound (both computer and minecraft) and then I accually played my 1.7.4 file and the sound was back. So you see my issue? I need sound for mo' creatures but I really like jammy's, any help on how to restore my sound?
Added (1). My game didn't crash, the sound just doesn't work, and the versions should be fine I have friends who used them together.