It sounds like you have a video file (likely a scene release) named something like: Loaded.in.Paradise.S01E09.Proper.Group.AAC.MKV (or .MP4 ).
Use FFmpeg (free):
ffmpeg -i input.mkv -c copy -c:a aac -b:a 128k output.mp4 (keep video original) loaded in paradise s01e09 aac