Missing Album Tracks after track 9?

Just checked an album with 12 tracks.  The album is on my NAS.  I used the Album category in the 80.15.04- IOS app to open that 12 track album.  All 12 tracks were there and could be played.

what sounds weird, in your case, is the fact that double digit track numbers don’t show.  In MP3 Tag try tagging an album with track numbers starting with 10, reindex and see if none of the tracks for that album show.  You may want to try this differently by tagging the first track with 01 and the rest of the tracks starting with 10.  Then after a reindex see what shows.

I should have noted that it isn’t consistent across the library, I have albums of 20+ tracks that it does “see” and catalogue correctly. Whilst I haven’t checked every single album yet (would take a while!) I haven’t come across a common trigger for this behaviour.

I thought it might be compilation albums but the 3rd example I found was an album by a single artist.    

Just to add (and I had not noticed this previously) if I browse by folders to an album, I don’t see any track numbers at all in that view, within an album itself, so there is probably something awry here ​@Editor. I think there is still more work being done by Sonos engineers on the local library too.

Ken:

Actually what I’ve noticed is if you see a track number listed with the track title it’s an indicator that the track will not play.  I think this was only when the track was in the queue, but I’m not totally sure since I have mostly cleaned all those unplayable tracks.  As I recall the album cover for those unplayable tracks was also missing.

All the other views in the app other than Folder do show track numbers.

Yes… there is work to do on the local library.  The first thing IMHO is displaying album art for local library tracks in the queue.  This is for IOS.

Is there a full stop in the track name?  That can cause issues. 

No full stops but there are “,” “(“ and other characters but these also appear in other albums/ tracks that have been indexed correctly.

The plot thickens though, 

I have now come across

1 album that has 10 tracks in the folder but only 8 appear in the album view

1 album that has 23 tracks but only 10 appear 

so even the first “9 tracks” statement I referred to originally is not consistent !

In the folders there is a mix of album tracks where the source file name has a numeric track prefix and others where it doesn’t and therefore there doesn’t seem to be a link between this issue and whether a track has a numeric prefix or not.  

The fact that I now find that this is an 8, 9 or sometimes 10 track limit leads me to thinking that the media library scan logic has hit some sort of buffer limit or timeout issue during indexing. 

Here is an example:-

The original source on the NAS 

The Folder view on Sonos shows all 16 tracks in the folder correctly (the last one is there although not on this screenprint) : 

But the Album view stops after the 9th track.

It looks like all the tracks might be there in the 2nd screenshot.  It’s just that you are unable to scroll down to see them all.  When you select Play do only 9 tracks load into the queue?

Yes, in the Album view only 9 show and only 9 get added to the q. Hence you can only play the nine shown.