Cannot play downloaded number

I downloaded a number called Molossus in December 2016, but Sonos doesn’t recognize it.

1 I looked on the NAS, it’s there.

2 Iooked in iTunes on my pc, it’s there.

3 wanted to play it from my Windows PC (music is on the NAS) iTunes asks to share the pc. When I share the PC iTunes say that the pc is already shared.

4 When I select Molossus again Itunes asks again to share the PC.

5 I tried to download it again - I can nor select that option (it’s not there).

6 I deleted the number and try to download it again, the option to buy or download again is not here.

7 The number is now gone form the NAS.

When I played from my Iphone or Ipad – now problem.

This can't be a feature, this must be a bug...!