While Sonos is not proposing solution to access to your Sonos setup externally (like Plex for example), we are not able to directly retrieve your Sonos playlists unfortunately.
A solution, is to export yourself your Sonos playlists in a file format like XML, CSV etc... and make it compatible with Soundiiz format.
For iOS users, how to export Sonos playlists in Soundiiz format ?
We recommend you to use the Phonos Plus app, which is able to directly export a Sonos playlist in an XML format compatible with Soundiiz !
For non iOS users, how can I export Sonos playlists in file format ?
You can use the software MediaMonkey to export your Sonos playlists as EXTM3U, XPSF or other format compatible with Soundiiz.
Once I have export my playlists from Sonos, what should I do on Soundiiz ?
Simply go to Soundiiz and in top right tab "Playlists" select "Import playlist". A modal appears and select "By File" and upload your file here. Then, simply follow steps to match this playlists with music platforms supported by Soundiiz !