Invincible file -- can't delete it!

There is a file on my computer, an mp3 I downloaded, that isn't an mp3. It says it's an mp3 but it won't play, and I discovered that when I select the file and press delete on the keyboard, the cursor blinks but nothing happens. There are no right click context menus available for it. When I try to delete the folder it says 'Contains items whose name is too long for the recycle bin, do you want to permanently delete it?' and I say yes, and it says 'Cannot delete, access is denied.'
I am administrator, I do not know how to get rid of this file. Deleting in safe mode does not work. MoveOnBoot doesn't work. I don't know what it is or what else to do!

 

Where is it located?

You could boot into linux and delete it from there.

or

http://blog.opensecurityresearch.com/2011/10/how-to-acquire-locked-files-from.html

 

MBAM (malware bytes, I don't remember the exact name) has something called Assassin that may do the job.

 

yes FileASSASSIN from Malwarebytes will delete the locked file....

 

Unlocker never fails me on such cases.

 

Another for Unlocker

 

Unlocker and MBAM's FileAssassin failed me recently, using a bootable CD always does the trick