Why do Sonos S2 & SonoPhone apps load a different number of Amazon tracks?

Since the developers of SonoPhone don’t use this forum as support, and I don’t use SonoPhone myself, my guess is that the S2 (and likely S1) apps can’t read some of the file types. But you’d need to get support from SonosPhone to get a real answer. 

Maybe Sonos set the Sonos app to only read 500 tracks?

You could call Sonos support to confirm that giess.

The Sonos mobile app has a number of artificial limits on the items in a list, sometimes 100, 200 or, now, 400. They evidently chose a poor UX framework that cannot handle these things.

Third party apps like Sonophone, or mine, or the desktop apps, don’t have these artificial limits and show the full lists.

Some bizarre responses here.

Agree with ​@controlav, the mobile Sonos apps are shocking for accurately pulling the full number of tracks from Amazon Music playlists.

Previously, I’ve even seen a number of tracks duplicated at the end of the playlist, so although the playlist track number agrees with the expected amount, the loaded queue is actually incorrect.

​@MoPac - if you add another couple of tracks to the playlist, does it then load 500?

Mr. T:

 Just tried that with a playlist of 508 tracks.  SonoPhone loads only 500.  Sonos S2 this time loaded 500 tracks, but it did 200 first then after a short delay 300 and finally 500.  Guess the playlist had to be over 500 to get 500.

 Oddly, using S2, a playlist of 482 tracks only loaded 300 in the queue.  200 first then 300.  After swiping out the S2 app then reopening it there was 400 tracks in the queue.  When I load the playlist with the SonoPhone app I get all 482 tracks.

 Looks like Sonos S2 is rounding off to 100 and skipping the last 82 tracks.

 As a test I loaded another playlist with 298 tracks.  Sure enough S2 only loaded 200 tracks.

Amazon Music has a track limit of 500 when loading into the queue.

In my previous testing, I also noticed the queue initially loading 200 then chunks of 100 being added. When I had a playlist of 268 tracks, only 200 added. When I increased the playlist to 309, 309 tracks added, but tracks 301-309 were duplicates of the same 3 tracks which were the tracks 307, 308 and 309 in the actual playlist. The actual tracks 301-306 were MIA.

I raised the issue of playlists being truncated (or having tracks duplicated in error) when added to the queue 5-6mths ago with Sonos. I no longer subscribe to Amazon Music Unlimited but looks like the bug is still outstanding.

 When I load an Amazon Music Unlimited playlist I created that has 498 tracks, why are a different amount of tracks loaded when using two different apps?  When I use Sonos S2, 400 of 498 tracks are loaded.  When I use SonoPhone all 498 tracks are loaded.

 If I load the 498 track playlist using SonoPhone the queue on Sonos S2 shows all 498 tracks.  Weird!

 

 

like an API or integration limitation on the Sonos S2 side rather than an issue with your playlist itself. Sonos S2 may be enforcing a track or pagination limit when loading Amazon Music playlists directly, while SonoPhone is likely fetching the full list and then pushing it to the Sonos queue. Since the full 498 tracks appear in S2 after loading via SonoPhone, it suggests the queue can handle them—just not the initial playlist load. This might be worth reporting to Sonos support as a potential S2 app bug or Amazon Music API constraint.

emanfatima:

 I will report that to Sonos support.  A solution I found to get more than 500 Amazon Music Unlimited tracks into the queue is to have two playlists of the same genre, let’s say Jazz.  Both of those Jazz playlists would be close to 500 tracks.  Now using SonoPhone load the first Jazz playlist into the queue.  Then, also using SonoPhone, hover on the second Jazz playlist and choose “Add to End”.  Now you will have combined the two Jazz playlists.  This will show in S2 as well.

You can Add to End of Queue in the Sonos app too.

I’ll try that, but if Sonos can’t load all of the first playlist I’m not sure I’ll get the entire 993 tracks.  I’ll give it a shot though.