Hiding certain local files (< 13 seconds)

[Marblelemons]

I get my local song files for spotify from a rhythm game. The way its files are organized are Songs -> Examplesongfile -> Examplesong.mp3 + other files. Of those other files included are little sound effects that are used in the game, and also take up a sizable portion of my local spotify library.

Any way I can just hide these certain sound effects (I'd rather not nitpick through a couple thousand folders)? All the sound effects are 13 seconds or less, so if I could JUST filter out those that'd work too. Thanks!