Audio Not Uploading

When I try to upload an audio file that is 66 seconds long and 387 KB in size, I receive an error "Uploaded file exceeded time limit." However, the limit states 90 seconds and 66 seconds is less than that. Additionally, I have uploaded audio files that are 400 KB in size so the file size also shouldn't be a limitation. Can you please let me know how I can get a file that seems to fit within the limits uploaded? Thank you!