United OpenLib of Sound (UOS) is an audio engine.

With UOS you can:

  • Listen to mp3, ogg, wav, flac,... audio files.
  • With 16, 32 or float 32 bit resolution.
  • Do internet audio streaming.
  • Record all types of input into file.
  • Add DSP effects and filters, however many you want and record it.
  • Listen to multiple inputs and outputs.
  • Produce sound from built-in synthesizer.


UOS uses PortAudio, SndFile, Mpg123, Faad, Mp4ff, Opus, OpusFile audio libraries and SoundTouch, Bs2b audio-effect libraries.


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You can explore Units, Functions, Procedures, Classes, etc in our
Source Documentation