Sonos can't connect to my mac for music library on iTunes

I have enabled sharing on my Mac, I have kept the macbook name really short however I am unable to search for a share so I enter the path manually and get told that the macbook won't allow the connection. I don't have a firewall.

Can you please follow the directions on this guided assistance FAQ to get that music library up and running? It sounds like you've already done most of those directions, but we'd like to recreate the error messages on the players for the next step. If you're still having trouble, can you please submit a diagnostic and reply back with your confirmation number?

Thanks.

I cannot now either update my I Tunes library, or even play music from it now !  Would someone from Sonos, admit there is a problem . Is it something to do with the Yosemite upgrade , or is it a Sonos problem . When i try to play music it is saying 'the server can't be found'.  When i try to update the library on Sonos, it says' I Tunes no longer available.' Can someone PLEASE help us . I spent a lot of money on my Sonos system..basically it is now a radio player !!

..I should also say that everything was great until the Yosemite upgrade . No problems with 18,000 tracks . So please.........no technical stuff about file types,codecs, blah blah. There are too many people on many forums, complaining about the same subject. 

I also have the same problem since updating to OS X Yosemite, worked well before upgrade, and ideas please

Hi Jon and Tony,

In most situations, music shares will work just fine following an operating system upgrade. However, changes to an operating system may result in potential file sharing issues in some situations, as many important system files are re-written or replaced. Usually these problems can be resolved quickly via configuration changes.  

Take a look at these troubleshooting suggestions and let us know how it goes.

General Troubleshooting Suggestions:

1. Remove and re-add your music library from that computer under Manage > Music Library Settings. (Jon, you've already done this step I see.)
2. Rename the computer and add the library again. Described in my post below in detail, and on this FAQ page.
3. Finally, you can manually setup a share and add your music library through the network sharing option.

If you’re still not able to get your music share working following the update to Yosemite, please send a diagnostic and reply back with your confirmation number. We’ll take a look at it for you.

Thank you Ryan for your reply. I have actually now managed to remove and re add my music library , but had to do it from my desktop Sonos app, and not from my I Phone app. (That doesn't work!) 
Deleting the old library and letting Sonos find the new library name seems to do the trick !!
Thanks for getting back .
Jon

Thank you Ryan for your reply. I have actually now managed to remove and re add my music library , but had to do it from my desktop Sonos app, and not from my I Phone app. (That doesn't work!) 
Deleting the old library and letting Sonos find the new library name seems to do the trick !!
Thanks for getting back .
Jon
Great to hear. You do need to do that from the computer, as likely the sharing settings on the machine were reset during the operating system upgrade. The phone can't setup those permissions on the computer. 

Let us know if you have any further trouble, we're here to help.

Thank you Ryan for your reply. I have actually now managed to remove and re add my music library , but had to do it from my desktop Sonos app, and not from my I Phone app. (That doesn't work!) 
Deleting the old library and letting Sonos find the new library name seems to do the trick !!
Thanks for getting back .
Jon
That was on the Mac

Thank you Ryan for your reply. I have actually now managed to remove and re add my music library , but had to do it from my desktop Sonos app, and not from my I Phone app. (That doesn't work!) 
Deleting the old library and letting Sonos find the new library name seems to do the trick !!
Thanks for getting back .
Jon
I managed to do this by going into sharing settings and ticking the SMB option and clearing the AFP option.