I am using 2.82 firmware now and Editor 2.82. When attempt to import an HLX file, I cannot see any of the HLS files in the folder. But I type "*.*" in the File name box and hit ENTER, I will be able to see those HLS files. Selecting anyone of them into the Editor was just like selecting a HLX file. . I noticed that the volume is set to "zero" and turning (or rather sliding it up to 100%) makes the HLS file work normally.