You could have downloaded Sonos4 3.5.1 from our software library for free. The software is included in Multimedia Tools. This download was checked by our built-in antivirus and was rated as safe. The actual developer of the free program is Sonos4.
From the developer:
Sonos 4 central feature is a state of the art software multiband compressor limiter (MBL9) for radio broadcasters. With this software and a suitable sound card it is possible to turn a Windows PC into an radio broadcast processor. The processor achieves its punch (loudness) through the use of a unique distortion masked final clipper. The software is for all forms of broadcasting such as AM,FM,DAB and Internet streaming.
You may want to check out more software, such as The Meditron Player, NRV10 interFX or DSP/FX Virtual Pack, which might be related to Sonos4.