PitchPerfect (full name: PitchPerfect Musical Instrument Tuner, PitchPerfect Guitar Tuner) is a free but highly accurate and professional instrument tuning software for Windows and Mac platforms, developed by NCH Software from Australia. It is specially designed for guitar players and other musicians, can help users quickly and effectively tune their instruments, so as to greatly improve the sound quality of instruments.

Switch (full name: Switch Audio File Converter, formerly called Switch Sound File Converter) is a very stable, user-friendly, comprehensive and professional audio format universal converter/compressor/extractor for Windows and Mac platforms, developed by NCH Software from Australia. It helps user convert and encode sound files quickly and easily.

Many music aficionados always need to use a variety of tools (from recording to editing) to improve their music when creating their own compositions. Among them, if you want to add a little different color to the original music, then you have to use mixing software to achieve. As a common means of music production, mixing allows the artistic style of music to change at will. Therefore, mixing has become one of the production methods that many music producers like very much.

MediaHuman Audio Converter is a free and cross-platform audio formats conversion & extraction program for Windows and Mac, developed by MediaHuman. It's written in C++ and Qt framework (for UI), and uses popular free software libraries like FFmpeg, OpenSSL, LAME, and TagLib.

Background music can be rated as the soul of a video, especially the soundtrack in a movie, many of which are classic. Most of the music in the film, however, is not available for sale as music albums. As a result, to get these soundtracks, we have to find a way to separate the audio tracks from a video file and save them as common audio formats, thus making it easier to enjoy these audio/music files alone on any multimedia devices.