You all downloaded some game or app once that was 50 parts big, and you had to rename them all from .bmp to .rar to extract them.

You can easily create a batch file that does that for you.

Open Notepad
fill in the notepad:
ren *.bmp *.rar

Of course, you have to edit these two extensions to fit the files you want to convert. Save this file as renamer.bat and run it in the directory where you want to rename your downloads.

Way of finding MP3s (or other formats) is using Google and typing the following:

parent + directory + mp3 + OR + wma+ #dido#

Replace #dido# by whatever artist you wish to find, for example:

parent + directory + mp3 + OR + wma+ #Lamb#

You should get plenty of dirs with MP3s or WMA files (you could add OGG, etc, to the query).

Hope it Helps You.

Justa little simple Tip to see hidden files on a Dir.

Start> run> type (cmd) –without the ()

At command prompt just type
dir /ah
if the list is too long u can use
dir /ah/p/w