i know a great way

if its on the desktop, its easiest because if it isnt, you have to make a list of subdirectories. ill show you the command for how to do it using msdos prompt

we will say the folder name is "poop" so go into msdos and here we go

ren desktop\poop more_music

the ren means rename
desktop is where the file is
\ makes it go to the next subdirectory
poop is the name of the file
the space is for separating the folder name and what you want the name to be
so say you want the password to be more_music
the _ is actually made by pressing alt 255 it makes the little _ and that is where the password thing is. to get it back to normal so you can open it, you would type

ren desktop\more_music poop

remember the _ = alt255, and yo uhav to rename it the original name to make it open

hope that helped!