Can't add sound notify in animation

I’ve made a few sound effects to add to my player character when he blocks, jumps, etc. My problem is that the animation window isn’t letting me add the sound I want, but it’s letting me pick other sounds that I don’t want to use.

The audio file is .WAV format, 16-bit stereo. All of my audio files are, not just the newly created ones

I somehow fixed it by moving the audio files into the same folder as the other audio files. I had it in the same folder as my player character. Strange…