Best way to get Sonos to play mp3 files located on a desktop?

i have a win10 desktop. it has a shared folder on the network. within that 1 folder are 10+ folders for mp3 genres.

a Sonos is also on the network.
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how to have HA serve mp3 files onto this Sonos?
i dont need fine control of which songs to play. usually i just need to select a genre and would like to have the Sonos randomly play all the songs in that 1 genre folder until i hit stop.
what’s the best way to achieve this?

I have the same question. I want to play all mp3 files in one folder, not just one. Is that possible to achieve? Thanks!