Blend file size 325mb +

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1

I have a relatively simple scene. A fairly low poly landscape with baked normal map, an armature with a walk cycle and a low poly humanoid mesh also with a normal and displace map. For some reason during the course of fine tuning everything the file size jumped from around 15mb to over 325mb. The only major change was I added sound, an mp3 about 9mb. I wonder if it is caching the animation within the blend file? Does blender store a new sequence every time an action gets edited? I’m confused.
Any ideas anyone, is it normal?

Thanks

2

Are your normal and displacement maps packed into your blend file?
Do you have compress selected when you save your blend ?

3

I compressed the blend file on saving and it reduced the size to a little over 100mb which still seems too big to me. I can’t figure out what I did to increase the file size so much.

Thanks for the tip about compressing.

4

You don’t have any physics simulations do you? They take up massive space…