MakeOwnRingtone.com - Make your own ringtone! Follow the steps:
Converter365 - Convert all your files the easy way with converter365.com
Switchr.net - Switchr is a free online audio converter site that lets you convert audio files on the fly.
CR2toGPGconverter - If you need to open, edit or print the images from your Canon DSLR that are in CR2 format, you’ll have to convert them in JPG or some more accessible image format.
Song Cutter and Ringtone Maker - Free Online Ringtone Maker
NEFconverter - NEF is a proprietary Nikon RAW image format that you need to convert to JPG, or some more usable format, to send or print. Since NEF uses lossless compression and contains metadata from the camera sensor, it is also referred to as digital negative.