Sound of the Future

A modern music player built for people who care about how their music sounds. SotF combines a fast, lightweight player with a complete audio-processing toolkit so you can shape every part of the listening experience: room correction for your speakers, headphone EQ for your cans, stereo-to-surround upmixing, and a chain of professional-grade plugins — all running locally on your machine, in real time.

-Play your library, your way

- Browse music, organise albums and playlists, and play any common format: FLAC, MP3, WAV, OGG, M4A, AAC, ALAC, and MP4. ReplayGain keeps loudness consistent across tracks. The library scales to tens of thousands of files without slowing down.

Make any room sound right. Most rooms ruin good speakers — bass nulls, harsh peaks, comb filtering. SotF's guided room-correction wizard uses measurement-based EQ to flatten your in-room response. Bring your own measurements, or capture them with a USB microphone using the built-in recorder.

Headphones that actually sound neutral. Every headphone has a frequency-response personality, and almost none match a neutral target. The

headphone-EQ wizard pulls measured response curves from a public database and computes a parametric EQ that takes your cans to the target curve of your choice — Harman, flat, or custom. One click, audibly different.

Real-time DSP plugin chain

Slot processing into a free-form chain: parametric and dynamic EQ, linear-phase EQ, compressor and expander, transient shaper, saturation, dither, crossfeed, stereo imager, de-esser, hiss reducer, speech denoiser, convolution reverb, ambisonics rendering, and more. Build presets, A/B them,

and audition changes against the original signal instantly.

Stereo, but bigger

The upmixer turns any stereo source into 5.0 or 7.0 surround using psychoacoustically-grounded matrix decoding — clean dialogue centering, ambient rear extraction, no phasey artifacts. Great for music, films, and live recordings on any multi-speaker setup.

Spectrum, loudness, and signal analysis

Live spectrum analyser, LUFS loudness meter, true-peak monitor, phase scope, and waveform view. See exactly

what your processing chain is doing, in real time.

Two faces, one engine

Use the polished desktop UI with charts, plugin chains, and visual EQ. Or live in the terminal — the full

TUI gives you the same feature set with mouse and keyboard, perfect for headless servers and minimal

setups.

Cross-platform

Native builds for macOS (Apple Silicon and Intel), Linux (x86_64 and ARM64), and Windows. The same DSP

wherever you listen.

Open and accountable

Source-available on GitHub. Reproducible builds. Cosign-signed Linux artefacts and Apple-notarised macOS

releases — you can verify exactly what you're running.

Whether you've spent thousands on hi-fi or just want your everyday headphones to sound their best, SotF

gives you the tools audio engineers use, in a player you'll want to live in.

Free download. No account. No telemetry.

sotf.spinorama.org