I have Movie Studio 15 platinum. When I try to add mp3 files, they will not appear inside their folder as an option under "all media files." If I change that to search for "all files" then the music mp3 files appear and I can choose a file to add to the project. Then, when I add the mp3 file into a music channel (which is what it is) in the project, it plays back as screeching noise!
I have an Asus ROG with an i7 processor, new SS hard drive, windows 10.
I never used to have this issue. Is there a way to correct this?