I need help with Sonos and iTunes Playlist

[cambridgehank]

I have a number of playlist in iTunes.  I have set up a Sonos system in my condo and imported iTunes playlist(s) to the Sonos system.  In several of the imported playlist, a few songs are shown with the file number first.  Sonos does not play these songs.  Yet, the same song is in the Sonos Music Library which is imported from my Mac Mini Music Library.  I have spoken with Sonos tech support and they tell me it is a tag/media problem with iTunes and iTunes playlist.  I am not that technically sophisticated that I know how to make the playlist song and the album song identical.  Does adding a song to a playlist change the tags?  Thanks for all you support.

[kirkmc]

I don't know what the cause is, but if Sonos is reading the tags in the files - the artist, album, and song info - then this shouldn't happen. I don't use Sonos with my library, because it doesn't support enough tracks, so I can't really help more than that. 

[cambridgehank]

Thanks Kirk. I have been working with Sonos tech support all day. Their diagnostic report has the same problem as you and I have. They cannot figure out why Sonos is not reading some files.