mikebainbridge wrote: 
> I have the same problem but it limited to only one device - My very
> first Slim Devices Squeezebox running firmware 40. iPlayer is v1.5.3 and
> LMS is 7.9.1 . All AAC file settings are 'on' and my 2 Picore players, 2
> ipads and 2 iphones all play at the correct speed. It's most frustrating
> as after many years of not working with Spotify the Spotty plugin as
> brought it new life ! Any thoughts apart from 'get a more modern
> device?'

The player with firmware 40 is a SB1 which cannot play AAC natively and
cannot play Flac so AAC is transcoded into 48KHz PCM which has no header
so SB1 plays it has 44.1Khz.  I'm not clear what you are talking about
wrt Spotty as this a BBCiPlayer thread.

That is the problem and has been true for all files & stream 48kHz AAC
on SB1 - not just BBCiPlayer and known for a long time (
http://forums.slimdevices.com/showthread.php?6405-48KHz-playback )

AFAICT no solution has been posted over the years.  

The only solution I can think of is to add sox in the "AAC-> PCM"
trasncoding for SB1  to ensure a 44.1kHz but this will put a load on the
LMS processor.
No details on your LMS server - so the following is for a Linux based
server. 
If lines below are edited to use correct MAC address  (i.e. replace with
AMAC of  your SB1)  and then saved in a custom-convert.conf file (make
sure tabs are saved as tabs and not spaces) in the same directory as the
LMS convert.conf file then after LMS restart LMS will always convert AAC
streams to the device with MAC address into 44.1Khz streams. 

MAC address of player can be found in LMS WebUI Setting/Information tab
or on label of player.


Code:
--------------------
    
  
  aac pcm * aa:bb:cc:dd:ee:ff
        # IF
        [faad] -q -w -f 1 -b 1 $FILE$ | [sox] -q -t wav $FILE$ -t raw -r 44100 
-c 2 -2 -s -
  
--------------------


In theory for all SB1 type devices - the following would work.

Code:
--------------------
    
  
  aac pcm Squeezebox *
        # IF
        [faad] -q -w -f 1 -b 1 $FILE$  | [sox] -q -t wav  $FILE$ -t raw -r 
44100 -c 2 -2 -s -
  
--------------------


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