Zurcast (Shoutcast/Icecast) Streams Remain Muted/dont start in Firestorm Viewer (Despite Working in External Players)

FMOD Engine
1

A radio stream hosted via Azurcast remains completely silent on parcel land audio within the Firestorm Viewer (Second Life). However, the exact same stream URL works instantly, flawlessly, and without interruption in external media players like VLC and via direct browser links.

Technical Environment:

  • Server / Frontend: Azurcast (Latest Version)

  • Streaming Services:

    • Shoutcast 2.6.1.777 on Port 30000

    • Icecast 2.4.0-kh22 on Port 30010

  • Client / Viewer: Firestorm Viewer (Latest Version) using the integrated FMOD audio engine

  • Server Domain: Secured via Reverse Proxy / SSL (fm.darkfurry.de)

Steps & Diagnostic Tests Performed:

  1. Direct HTTPS Links (/listen/.../radio.mp3): Consistently throw A HTTP error occurred or getOpenState Error in the Firestorm developer log.

  2. Direct Shoutcast Port (Port 3000): Results in Couldn't connect to the specified host inside the viewer. https://fm.darkfurry.de/listen/darkfurry_radio/radio.mp3 [[Shoutcast Link]]

  3. Switch to Icecast (Port 30010): Tested the unencrypted URL format
    https://fm.darkfurry.de/listen/livestream_1/radio.mp3 [[Icecast link]]

  4. VLC Test: The exact Icecast URL
    [[Icecast link]] starts immediately and plays smoothly in the VLC Media Player.

  5. Viewer Cache: Cleared Firestorm’s media cache multiple times and reset audio output devices within the viewer.

LOG:

LLStreamingAudio_FMODSTUDIO::start : Starting internet stream: [[Icecast link]]
Check_FMOD_Error : FMOD::sound::getOpenState Error: A HTTP error occurred. This is a catch-all for HTTP errors not listed elsewhere.

2026-10-07T13:26:37Z INFO LLViewerParcelMedia::filterAudioUrl : Audio URL filter: no active alert, filtering new URL: [[Shoutcast Link]] (max 2 links in this forum)
2026-10-07T13:26:37Z INFO LLViewerParcelMedia::filterAudioUrl : Audio filter: URL allowed by whitelist
2026-10-07T13:26:39Z INFO LLStreamingAudio_FMODSTUDIO::start : Set internet stream to null
2026-10-07T13:26:39Z INFO LLStreamingAudio_FMODSTUDIO::start : Starting internet stream: [[Shoutcast Link]] (max 2 links in this forum)
2026-10-07T13:26:59Z WARNING Check_FMOD_Error : FMOD::sound::getOpenState Error: Couldn’t connect to the specified host.
2026-10-07T13:28:17Z INFO LLStreamingAudio_FMODSTUDIO::start : Starting internet stream: [[Shoutcast Link]] (max 2 links in this forum)
2026-10-07T13:28:17Z WARNING Check_FMOD_Error : FMOD::sound::getOpenState Error: A HTTP error occurred. This is a catch-all for HTTP errors not listed elsewhere.