UPnP not working with converted files

The only ‘staff’ from Sonos who frequent these forums are forum moderators, not devs. You’d be better off, if you want to discuss the issue, to call Sonos Support directly to discuss it.

It doesn’t seem like you’re doing everything by the book though, it seems like you’re trying to hack it. More power to you, but I doubt Sonos staff will be able to help much.

Hacking it is indeed what it sounds like, because since May Sonos doesn't fullfill my needs.

Therefore I am trying to find satisfying solutions by my own means. I am tech savvy enough to do so, but even when I am trying to find solutions I find more errors with this device, which is disappointing.

Have you tried bubbleupnp?

It seems to be the goto Swiss Army knife for network music playback using android devices and upnp/dlna.

There is also a completely separate bubbleupnp server which can present existing upnp/dlna devices as chromecast and/or openhome devices on the network and supports on-the-fly transcoding.

I don’t have a use for chromecast or the android app, but I do use the server software to turn my media players into openhome devices, which gives per device queue playback rather than needing my tablet to always run and maintain the queue.

It seems Sonos may not be fully compatible with certain formats or configurations. Try these steps:

1. Check Sonos settings and update firmware.
2. Adjust transcoding settings in Symfonium.
3. Verify Sonos model compatibility with UPnP formats.
4. Ensure both devices are on the same network.

If the issue persists, contact Sonos support.

Have you tried using Plex?

It’s a great all-in-one solution for streaming media across devices using your network. It works with DLNA and supports various devices for seamless playback. There’s also a Plex server you can set up to stream content from your library to compatible devices.

I personally use it to organize my media and stream it to various players, including my smart TV, mobile devices, and even some older devices that support DLNA. It’s simple to set up and gives you more control over the playback and queues, especially if you have a lot of devices in your home network.

Upload your files to iBroadcast.com and tell Sonos to play from there.

It seems like the issue might be specific to Sonos handling UPnP for certain formats like Opus at 48 kHz and MP3 at 44.1 kHz, despite being officially supported. Since it works with other UPnP devices and over Chromecast, the problem likely lies with Sonos’ UPnP implementation. You may want to contact Sonos support or check their community forums for insights. Meanwhile, sticking to FLAC or experimenting with other formats might be a temporary workaround.

It sounds like you're facing compatibility issues with Sonos and your transcoded files. Even though 320kb/s MP3 at 44.1kHz should work, it might be worth checking your transcoding settings, ensuring your Sonos firmware is up-to-date, or trying alternative UPnP servers like Plex or BubbleUPnP. Additionally, using AirPlay or Bluetooth might be a workaround if Sonos supports those. If the issue persists, reaching out to Sonos support could provide further solutions.