In addition to this, you can also convert your songs from one format to another, changing them from MP3 to WAV, OGG or WMV with just one click.
In both cases, the process is relatively quick and it doesn't generate temporary files in the process. Instead, it works directly on the original files (so it's good idea to be careful and make back-up copies). In addition, you can carry out batch conversions.
Free Merge MP3 is a good audio conversion tool. It is lightweight and easy-to-use, and it will definitely come in handy on more than one occasion.