MP3 files are one of the most widely supported audio file format today. Unfortunately, MP3 files do not support 5.1 surround sound transmission by default due to built-in stereo audio encoding. Dolby Digital is the most widely supported surround sound format today; all DVD/Blu-ray movies support it and most video games do as well. Dolby Digital has a technology that will take stereo audio sources (e.g., MP3 files) and convert them to full 5.1 surround sound. This technology is called Pro Logic II and is included with most recent surround sound systems. Writer Bio

How to Make MP3 Files Into 5 1 Surround Sound - 35