MP3Resizer is a tool for optimizing the capacity of portable mp3 music players, reducing the size of mp3 files. It`s really useful for mobile phones, Pocket PC etc, that don`t have a huge capacity.Thanks to MP3Resizer, you can even triple the capacity or number of songs you can store in your mp3 player. This reduction is achieved by recompressing a file using another codec, and a little smaller bitrate, at the cost of a little quality. When MP3Resizer is about to recompress a file, it allows you to listen to the original, then after recompression to the new version, to make sure there are no appreciable differences in quality between the two.