I added a new engine mod for LFS and when I go to shift + a and select the sound mod, it says "could not find file". I tried reinstalling LFS, but it didn't work, and I don't know what else I can do. If anyone knows how to resolve this, please share your thoughts with me. Thanks

More info would be nice, which 'mod' is it, where did you install it and is it a .eng file?

it was an engine mod, and the sound was from a youtube video I saw. And yes, it is an .eng file.

upload the file so that others can see if it works for them.

Here's the link to the youtube video which I got the mod from. https://www.youtube.com/watch?v=Yb0lwiRxthM&t=32s the link is the in description.

Well that video contains a VOB mod, so I'd probably remove the link if I were you.

The reason why LFS can't load the files is because they're not named properly, there's a space between the underscore and mod name. It should work if you remove the space between "XRT_" and "SR20DET".

Oh, ok. Thanks a lot!