OpenMPT (short for Open ModPlug Tracker) is a popular free and open-source sample-based audio tracker from Germany. It was developed in 1997, based on the classic and original ModPlug Tracker written by Olivier Lapicque. Its design purpose is to make writing music on computer become more interesting, easier and more efficient.

In this digital music era based on Internet, the source of our music files becomes complex. As a result, accordingly, music labels are more confused than ever. If just play music on computer, that is not very bad. While if it is on mobile device, when you want to find and listen to some desired songs, then the music files must have orderly and correct ID3 tags. And that fact is, editing music labels has always been a boring job makes a lot of people feel headache.

SONY's Sound Forge Pro is an award-winning multi-channel audio editor from Japan. It comes with powerful, comprehensive and intuitive functions for professional digital audio processing special effects production. This includes audio editing, recording, effects producing & processing, coding, etc.

AMR (Adaptive Multi-Rate) is the most widely used, compact voice standard in the mobile communication systems (its audio file size per second can be controlled at about 1KB). It was known as the most common saving format for mobile phone audio recording (including old-fashioned ringtone formats) and widely recognized by each big mobile phone manufacturer. At the same time, it is also the only audio format that implemented loading vocals in the MMS.

Cool Edit Pro (its next generation of successor is the current Adobe Audition) is a powerful, excellent multi-track recording and digital audio editing software developed by Adobe Systems company. Many users described it as an "audio painting" program, which is enough to see its technical background with flexibility and usability.