MP3. In just over 5 years, this little codec has changed the face of digital music. Every geek remembers the first time they downloaded a 3-5 megabyte file which contained an entire song. When you realize that the most common digital music format back then was the WAV with its astronomical files sizes of 40 megabytes for a typical song, the MP3 format was an astronomical breakthrough. Fast-forward half a decade and there are dozens of firms marketing MP3 digital audio players. Today, we look at the new Yepp YP-300S from Samsung.