I've been through the forums and fixed the problem with the too-long computer name. I've made sure that SMB file sharing is enabled and made sure that the music folder is in the list of shared folders. I've re started the computer a bunch of times to make sure the settings are updated. Still, when I try to add the music library (same user on the same computer), I get the error:
"Sonos was unable to add the music folder.
Unable to add the shared folder "//X-XXXXX-XXXX/Music" to your music library (1002)."
What am I doing wrong? I swear that it worked briefly yesterday, but today I can't get the connection to work at all.
Best answer by Chris