Well, did you know you could hide your files in a JPEG file?
For this, you will only need to download WinRAR Or WinZip ( WinRAR is RECOMMENDED)

Ok, lets begin…

• Gather all the files that you wish to hide in a folder anywhere in your PC (make it in C:\hidden - RECOMMENDED).
• Now, add those files in a RAR archive (RECOMMENDED secret.rar). This file should also be in the same directory (C:\hidden).
• Now, look for a simple JPEG picture file (RECOMMENDED friends.jpg). Copy/Paste that file also in C:\hidden.

• Change the extention of notepad to .CMD
• Now, friends.jpg is the picture you want to show, secret.rar is the file to be hidden, and output.jpg is the file which contains both.
• Now, after you have done this, you will see a file output.jpg in C:\hidden. Open it (double-click) and it will show the picture you wanted to show. Now try opening the same file with WinRAR, it will show the hidden archive .

You Can Also Hide With A MP3 WMA or Any Other Format for that u just need to change the code with your file name.