Sonos + piCorePlayer v6 + SMB1

Hi there,

I am new here, and am using piCorePlayer on a Raspberry Pi 2 since a few weeks. I added some USB-Drives, and can access LMS with some Raspi Zeros and iPeng on my phone.
Works great so far. Nice work, it's a great piece of software. Thanks for that!

I configured Samba with some shares, which are visible and accessible on my Mac. So far, so good.
However, I have an original Sonos, which seem to only support SMB1. If I try to add the share to my library in the Sonos-Software, it doesn't work.

My question: Do I need to activate SMB1, and HOW can I activate SMB1?

Thanks in advance!
Cheers
Jamirokwai