SPDIF Keep Alive utility for Windows

Keep your S/PDIF link alive

SPDIF Keep Alive is a small Windows utility with a .NET-based graphical interface that prevents S/PDIF outputs from dropping when there is no audio playback. It runs in the background and helps maintain a continuous digital audio link so connected devices — such as AV receivers or soundbars — remain recognized and ready to play sound.

Key benefits

• Stops the digital audio line from disconnecting during periods of silence, avoiding interruptions when playback resumes.
• Designed for Windows environments and built with a user-friendly .NET GUI.
• Useful for home cinema setups, PC-based audio rigs, and other multimedia systems that depend on a stable S/PDIF link.
• Eliminates the need to constantly restart or reselect audio outputs manually.

Supported connections and formats

• HDMI audio passthrough for displays and AV receivers.
• Toslink/optical S/PDIF connections commonly used in home theater hardware.
• Widely used digital audio encodings (for example, standard PCM and common multichannel formats).

An alternative option

SHAREit Free — a no-cost Windows tool — is often recommended as another easy-to-use choice. It’s compatible with Windows platforms, approachable for beginners, and supports a variety of digital audio connections and formats, making it a practical backup when you need a simple solution to keep audio links stable.