MicMixer

Free plan Open source Windows

What MicMixer is

MicMixer is a free Windows app that combines a microphone, music, and an optional voice changer into a virtual microphone for games and voice chat. Push-to-talk gates the outgoing mix, and an option keeps music playing while the microphone is gated. A configurable hotkey switches between the normal and modified microphone, with an optional release delay. Music can come from local MP3 files, a YouTube link downloaded as MP3, or audio captured from a running application such as Spotify. For streaming, a secondary output sends the full mix to a device OBS Studio or Streamlabs Desktop can capture. A click-through status overlay and a local web page are also available for streaming software use. MicMixer requires a virtual audio cable; its installer can offer the maker-recommended VB-CABLE. It supports Windows 10 or 11 on x64 and is self-contained, so a separate .NET installation is not normally needed. The app is open source under Apache-2.0 and processes audio locally. Its privacy policy says it has no account, advertising, analytics, telemetry, or crash-report uploads. Release builds check GitHub for updates at most every 12 hours while the main window is open; media downloads contact the relevant service.

Who it suits

MicMixer suits Windows users who want to combine microphone audio and music for games, Discord, or other voice chats. It also fits people streaming or recording with OBS Studio or Streamlabs Desktop who need a separate output, overlay, or browser source.

What it does well

Combines microphone, music, and an optional voice changer.
Push-to-talk can leave music playing while the microphone is gated.
Supports MP3 files, YouTube downloads, and captured application audio.
Provides a secondary mix output for OBS Studio or Streamlabs Desktop.
Free and open source under Apache-2.0.
Processes audio locally without accounts, ads, or telemetry.

What to know first

Requires a virtual audio cable.
Supports Windows 10 or 11 on x64 only.
Current releases are unsigned.

Plans

Plan	Billed and limits	Price
MicMixer	Free, open-source Windows app · Windows 10/11 x64	Free
Free	Free of charge · Windows 10/11 x64 · Requires microphone and virtual audio cable · No paid tier stated	Free

As github.com lists them, read 9 Oct 2026. The maker's own page has the final word.

Getting started

Choose the Windows installer, ZIP version, or install through winget.
Install a virtual audio cable; the installer can offer VB-CABLE.
Run MicMixer on Windows 10 or 11 on x64.
Select microphone and music sources, then configure push-to-talk or the switching hotkey as needed.
For streaming, use the secondary output or local web page with OBS Studio or Streamlabs Desktop.

Verdict

Choose MicMixer if you want a free Windows tool to combine microphone and music audio for voice chat or streaming. Look elsewhere if you need a platform other than Windows or do not want to use a virtual audio cable.

Questions

How much does MicMixer cost?

MicMixer is free, with a listed plan price of $0.

Which platforms does it support?

MicMixer supports Windows 10 or Windows 11 on x64.

Does MicMixer require a virtual audio cable?

Yes. The installer can offer to install the maker-recommended VB-CABLE.

Can it send audio to streaming software?

A secondary output sends the full mix to a device OBS Studio or Streamlabs Desktop can capture. It also provides a local web page for use as a browser source.

Is MicMixer open source?

Yes. It is distributed under the Apache-2.0 license.

Does MicMixer collect audio or account data?

Its privacy policy says the app processes audio locally and has no account, advertising, analytics, telemetry, or crash-report uploads. Release builds check GitHub for updates at most every 12 hours while the main window is open, and media downloads contact the URL's service.

Facts from MicMixer's own pages

Application capture: MicMixer can capture audio from a running application such as Spotify through Windows process-loopback APIs. · github.com, 15 Oct 2026
Contributor: Project documentation credits Pixlexi with use cases, testing and feedback. · github.com, 15 Oct 2026
Distribution: The maker offers a Windows installer, a ZIP version, and installation through Windows Package Manager (winget). · benjibutten.github.io, 9 Oct 2026
Independent catalog entry: Wingetly lists BenjiButten.MicMixer version 2026.8.3 as an x64 ZIP package and records no known CVEs in its best-effort check. · wingetly.io, 15 Oct 2026
Installation choices: The maker provides an installer, a ZIP archive and a Windows Package Manager command. · wingetly.io, 15 Oct 2026
Intended users: The maker describes use cases including FiveM players, voice chat users, and people streaming or recording with OBS or Streamlabs. · benjibutten.github.io, 9 Oct 2026
License: Current source is Apache License 2.0; releases through v2026.7.3 remain under the earlier MIT terms. · github.com, 15 Oct 2026
Limit: external capture: Application capture depends on Windows process-loopback support and the selected application actively producing audio. · github.com, 15 Oct 2026
Limit: overlay fullscreen: Exclusive-fullscreen applications may prevent the desktop overlay from appearing. · github.com, 15 Oct 2026
Limit: unsigned releases: The current Windows executable releases are unsigned, so Windows SmartScreen may warn or Smart App Control may block them. · benjibutten.github.io, 15 Oct 2026
Limit: virtual audio setup: Users must configure a virtual audio cable and select its output in the receiving game or chat application. · github.com, 15 Oct 2026
Limit: Windows only: The published product targets Windows 10/11 x64 and lists no macOS, Linux, iOS or Android version. · wingetly.io, 15 Oct 2026
Local monitoring: Music can be monitored through a separate physical playback device with independent volume control. · github.com, 15 Oct 2026
Local web endpoint: The stream overlay binds to 127.0.0.1 and exposes status and level data to local clients. · benjibutten.github.io, 15 Oct 2026
Maintainer: The project identifies BenjiButten as its maintainer and author. · github.com, 15 Oct 2026
Music ducking: An option lowers music while the microphone is active and restores it when speech stops. · github.com, 15 Oct 2026
Music library: The built-in player supports MP3 files, multiple folders, search, queues and transport controls. · github.com, 15 Oct 2026
Music sources: Music can come from local MP3 files, a YouTube link downloaded to MP3, or audio captured from a running application such as Spotify. · github.com, 9 Oct 2026
Network behavior: Release builds check GitHub for updates at most every 12 hours, while media downloads contact the service named by the submitted URL. · benjibutten.github.io, 15 Oct 2026
Network use: Release builds check GitHub for updates at most once every 12 hours while the main window is open, and media downloads contact the URL's service. · benjibutten.github.io, 9 Oct 2026
Noise gate: The optional gate mutes microphone audio below a threshold to produce digital silence between phrases. · github.com, 15 Oct 2026
Overlay: A click-through desktop overlay shows microphone and music states, and the same status is available as a local browser-source page. · benjibutten.github.io, 15 Oct 2026
Package mirror presence: The NJU winget-source mirror lists BenjiButten.MicMixer with a 2026-10-06 index timestamp. · mirror.nju.edu.cn, 15 Oct 2026
Praise: free distribution: The independent Wingetly listing describes MicMixer as Apache-2.0 software with no installation charge. · wingetly.io, 15 Oct 2026

Where MicMixer stands on Freedom251

Audio Enhancement Software#2 of 30