Free data recovery software?

I’ve just deleted an MP3 File from my dictaphone which I run through the PC though not downloaded. Is there a free data recovery software available for recovering that one file?

I know an article which introduces top 6 free recovery tool.
http://www.data-recovery-utilities.com/articles/top-free-photo-recovery-software-to-get-data-back.html
but if these files are really important and valuable for you, I suggest you try professional recovery software as soon as possible even though it charges for money. I think your valuable photos are more important than just few dollars.
Wondershare Photo Recovery is the kind of photo recovery to recover delete music, video, and photo with nice quality.
you can preview your files through the Preview window to check if the files you need are recoverable and evaluate the recovery quality.
Try the free trial version from
http://www.data-recovery-utilities.com/photo-recovery/
Good luck