Hello jaclaz, tks for your reply Yes, the Bitrate column is set to be shown in explorer since years, it's just completely blank (no infos) In your first link you gave to me I found the regedit's folder previously not founded: instead to looking for it manually I just used the F3 function Modified the InfoTip regkey as suggested, rebooted and no fix (I attach the image of the mp3 folder, maybe you can see something wrong nor missing), if it should be not readable enough as attachment, here below the original image About the last link you kindly provide to me, I'm not so confidential with the regedit and its command lines to understand what I have to do sorry Anyway, my suspect is there is something wrong in Explorer regkeys, about the mp3 ones I think everything is ok Tks again!