I noticed some mods hadn't the good sounds, and the support for modded dimensions weren't really good. So I made a list of all the biomes ordered by type and dimensions. It includes Minecraft, BiomesOPlenty, RealWorld, Traverse, Thaumcraft, BuildCraft, IntegratedDynamics, DefiledLands, TwilightForest, Erebus, Betweenlands, Tropicraft, Aether. Don't even ask me how much time I toke for making this list, I must really like your mod for doing it. I hope it will help you for supporting all the modded biomes and dimensions. I put it here if you wanna see it. CreativeMD/AmbientSounds#27

I added Aether biomes in the long list I had made. I'm not sure if they should be classified as plains or forest, since they are between two, but I think forest would fit them more. I let you look at them by yourself. https://aether.gamepedia.com/Biome

RealWorld has been splitted between Plant Mega Pack and Decoration Mega Pack, and the biomes "Bamboo Marsh", "Birch Autumn Forest", "Blue Oak Forest", "Bur Oak Forest", "Bambona Beach", "Emperor Ridge", "Flatland Thicket", "Silver Birch Hills", "Spiny Forest", "Spruce Mountains" has been removed with it. So all these biomes don't need more support.

I made some error classifying some biomes, notably "Badlands" from Traverse are Savanna and not Plains, and I added some missing and new biomes from Traverse. I added NetherEx biomes as well.

I put everyting all the changes on the list I had made on first issue. CreativeMD/AmbientSounds#27