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

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 was facing this issue and found a solution that works.   My music is in a shared folder that I point my iTunes towards.   After following all the other checks (firewall, sharing permissions, disk utility verification, etc.), I manually added my music library using the 3rd set-up option but noticed the recommended path syntax:  \\computer\user\music folder didn't follow the mac convention.  I used \\computer/user/shared music folder instead and it worked like a charm.  I have both AFP and SMB file sharing options selected under OS 10.9.5.

@RT than you for this - this solved my problem too.  Finally I have Sonos working on my iMac.  I have to ask: why on earth have Sonos implemented the Mac client in such a complicated way?  The music is on the disk drive on same Mac that the Sonos client is running on - why on earth doesn't it just read it - why do we need to bring in dodgy Windows technology (SMB) to share a drive - there has to be a simpler way.

I had the same problem with adding iTunes to my sonos controller on my mac yosemite.  I tried a number of the recommendations provided by the support strings.  
Finally, I resolved the problem by deleting the sonos controller on the mac and all the references in mac library using the program CleanMyMac.  I  then reinstalled the sonos controller and linked it to the existing sonos system.  I then added the iTunes directory and it is working beautifully.  NO problems since.

Hi Ryan, 

I've tried all of the above and still can't get it to work. 
The diagnostic ref no. is: 4763152

Thanks!

Hi Ryan, 

I've tried all of the above and still can't get it to work. 
The diagnostic ref no. is: 4763152

Thanks!
Thanks for that diagnostic. The players aren't able to get the name of the computer to respond properly on the network. This could be caused by a firewall on the computer preventing the resolution, an issue with the router not recognizing the computer properly, or some other trouble on the network.

Have you tried renaming the computer and adding the library again? I have some steps for doing this here and you can find it on this FAQ page too. Once you've renamed the computer, rebooting the router will make sure the new name is registered. Make sure you reboot your computer too.

Do you have the OS X firewall turned on or a different firewall or security software running?

Let us know how it goes.

I had the same issue with not being able to connect to my iTunes library on my Mac (10.10.4) after the latest controller update, so i tried removing the library and readding and now each time i add it, it goes through the process of adding / syncing and then it never shows up in the music library window.
Renaming my computer isn't really an option given other dependency related to that. Any help greatly appreciated.

I had the same issue with not being able to connect to my iTunes library on my Mac (10.10.4) after the latest controller update, so i tried removing the library and readding and now each time i add it, it goes through the process of adding / syncing and then it never shows up in the music library window.
Renaming my computer isn't really an option given other dependency related to that. Any help greatly appreciated.
Hi Steve.  However you feel about renaming the computer, please could you confirm what the computer's name for sharing and NetBIOS name are (see link below)?  Are you adding the folder to Sonos by selecting the "in my iTunes folder on this computer" or by browsing to it?  Are you using the Controller on the Mac itself to try to add the folder?

https://sonos.custhelp.com/app/answers/detail/a_id/2413/~/mac-os-x-music-sharing-help

I had the same issue with not being able to connect to my iTunes library on my Mac (10.10.4) after the latest controller update, so i tried removing the library and readding and now each time i add it, it goes through the process of adding / syncing and then it never shows up in the music library window.
Renaming my computer isn't really an option given other dependency related to that. Any help greatly appreciated.
I've actually given in and purchased an NAS and I'm in the process of moving my library there. Thanks for the quick get back though.

I had the same issue with not being able to connect to my iTunes library on my Mac (10.10.4) after the latest controller update, so i tried removing the library and readding and now each time i add it, it goes through the process of adding / syncing and then it never shows up in the music library window.
Renaming my computer isn't really an option given other dependency related to that. Any help greatly appreciated.
Good idea Steve. A lot of good uses at home for an NAS.