Analog to WiFi Speakers
Analog audio to Google Cast via low-latency streaming
I built this out of frustration.
I wanted a way to play analog audio sources like a turntable, CD player, or cassette deck on Google Cast speakers — especially speaker groups — but I couldn’t find a simple solution that actually did it properly.
Most alternatives I found:
- didn’t support Google Cast speaker groups
- had very high latency
- were unstable
- or required expensive dedicated hardware
So I built my own app.
It runs on Android and streams analog audio to Google Cast speakers using a local low-latency HLS pipeline.
What it currently does:
- streams analog audio to Google Cast speakers
- works with Google Cast speaker groups
- runs fully locally (no cloud dependency)
- delivers stable real-world latency of around 5 seconds
The app is fully working and solves a very specific limitation in the Google Cast ecosystem.
Curious if others ran into the same issue — or if this would actually be useful to you.
Also open to feedback or potential interest from companies working in audio / streaming.
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Quick demo setup:
Analog source → USB audio interface → Android tablet → local stream → Google Cast speaker group
Latency is stable around ~5 seconds once connected.