Hottub RelayFrom Hottub FM

Coming soon · Live audio encoder

Your studio.
Your sound.

A clear path from your radio studio to your streaming provider. Send your live mix, see the outgoing stream, and check the listener return in one place.

Find your platform Follow the signal

In development for Mac, Windows, and Linux.

For the people behind the stationRELAY / 01
Signal path: your studio audio passes through Hottub Relay to your streaming provider, then returns for a listener check.
Know the path. Check the return.Signal flow illustration · Software coming soon

From input to audience

Keep the playout you know.

Relay sits between your audio interface and streaming provider. Your mixer and automation software stay part of the setup.

  1. 01 / INPUT

    Your studio mix

    Select a supported stereo audio input.

  2. 02 / ENCODE

    Hottub Relay

    Encode your live program as MP3.

  3. 03 / SEND

    Your provider

    Send to a compatible streaming endpoint.

  4. 04 / LISTEN

    Your audience

    Check the listener return and listen independently.

Choose your desktop

A place in your station.

Three platforms, one purpose. Downloads will appear here after each release completes testing.

macOS

Apple Silicon & 64-bit Intel

Intel macOS 10.13.6 or later, including the Mid 2010 Mac mini. Apple Silicon targets macOS 13 or later.

In development · Download pending

Windows

Windows 11 · x64

Windows 10 22H2 is also a planned legacy compatibility target.

In development · Download pending

Linux

Ubuntu 24.04 LTS · x86-64

A native desktop interface, with credentials stored in the system keyring.

In development · Download pending

These are planned targets. Compatibility is still being verified; downloads are not available yet.

From the studio’s point of view

Delivery deserves a closer listen.

Stream activity tells you that data is moving. The listener return lets you check what comes back. Before going live, test a separate stream with your own audio interface and provider—and listen independently.

Good to know

Before you go on air.

A few details for planning your station’s setup.

Read the plain-text overview
What does Hottub Relay do?

Hottub Relay is a live audio encoder for radio stations. It sends your studio mix to a compatible streaming provider, with outgoing stream activity and listener-return monitoring in one place. It works alongside your existing mixer and playout software.

Can I download it yet?

Hottub Relay is coming soon. Mac, Windows, and Linux releases are in preparation. Downloads will appear here after platform testing; no public release date or pricing has been announced.

Will it work on an older Mac mini?

We are targeting Intel Macs running macOS 10.13.6 or later, including the Mid 2010 Mac mini. This is a compatibility target that still needs hardware testing. PowerPC Macs are outside this release.

Which audio formats and providers are planned?

The current trial uses a supported stereo 44.1 kHz input and MP3 output. Guided setup supports SHOUTcast v1-compatible endpoints. Check your own interface and provider before replacing a live encoder.

How should I check signal delivery?

Start with a separate test stream. Check outgoing data activity, inspect the listener return, and listen independently. Data movement alone does not prove that the intended audio is audible to listeners.

Help shape what comes next

Bring your station to the pilot.

Tell us your operating system, audio interface, and streaming provider. Please leave passwords out of your message.

Contact Hottub