Optimizing textures with DDSopt

[Luisangre]

I'm sure the answer to this question is easy but I just want to verify.

When we extract and optimize all dds files from the vanilla textures, dawnguard, dragonborn bsa etc; what do we do about the other files like music and meshes?

I was under the impression that we could completely remove the bsa file after extracting and optimizing the textures but we would miss out on all the music, meshes and other files.

Do we just leave the bsa alone and let the optimized textures folder overwrite the bsa textures while the game still load these meshe/ music files from the bsa?

Thanks in advance.