M2P v2.51 and LMS 7.9 with Spotty skips tracks uncommanded

Dear Heiner / M2P Community,

I recently upgraded each of my RPi 3B+ devices to M2P v2.51 and added a further new RPi 3B+ M2P device. Since doing this a frustrating problem has come up when using the Spotty (v3.1.0) plugin from M.Herger. The issue is that when I play an album or playlist (either through web-interface or Orange Squeeze app) in Spotty, it skips to the next track after 2-4s of play, uncommanded. If I actively command to skip track, it skips 2 tracks with 2-4s of play in-between, and sometimes it skips 3 tracks if all 3 of my players are active in the network. Sound is lost intermittently, until the system stabilizes.

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My set-up is currently:

„KitchenPi“ – RPi3B+ with IQAudio Digi-AMP+

Player Model: SqueezeLite
Player Type: squeezelite
Firmware: Max2Play v1.0.3 based on v1.8.7-999
Player IP Address: 192.168.1.74

#### AUDIOPLAYER CONFIG ####
### Configuration of Audioplayers
SQUEEZELITE_PARAMETER=-o sysdefault:CARD=IQaudIODAC -a 80:4:: -o hw:CARD=IQaudIODAC -V Digital -Q
SQUEEZESLAVE_PARAMETER=-n plugequal
SHAIRPORT_PARAMETER=-d sysdefault:CARD=IQaudIODAC -t hardware -m hw:CARD=IQaudIODAC -c Digital
USE_USB_DAC=0
USE_EQUALIZER=0
SYSTEM_USER=pi
YMPD_PARAMETER=–webport 8081
MULTISQUEEZE_PLAYERCOUNT=1
MULTISQUEEZE_NAME_0=KitchenP
MULTISQUEEZE_PARAMETER_0=-o sysdefault:CARD=IQaudIODAC -a 80:4::

„LivingRoomPi“ – RPi3B+ with IQAudio DAC-Pro (hosting LMS 7.9.1)

Player Model: SqueezeLite
Player Type: squeezelite
Firmware: Max2Play v1.0.3 based on v1.8.7-999
Player IP Address: 192.168.1.72

#### AUDIOPLAYER CONFIG ####
### Configuration of Audioplayers
SQUEEZELITE_PARAMETER=-o sysdefault:CARD=IQaudIODAC -a 80:4:: -C 5
SQUEEZESLAVE_PARAMETER=-n plugequal
SHAIRPORT_PARAMETER=-d sysdefault:CARD=IQaudIODAC
USE_USB_DAC=0
USE_EQUALIZER=0
SYSTEM_USER=pi
YMPD_PARAMETER=–webport 8081
BLUEALSA_PLAY_AUDIOCARD=hw:0,0

„Officepi“ – – RPi3B+ with IQAudio Digi-AMP+

Player Model: SqueezeLite
Player Type: squeezelite
Firmware: Max2Play v1.0.3 based on v1.8.7-999
Player IP Address: 192.168.1.69

#### AUDIOPLAYER CONFIG ####
### Configuration of Audioplayers
SQUEEZELITE_PARAMETER=-o sysdefault:CARD=IQaudIODAC -a 80:4:: -o hw:CARD=IQaudIODAC -V Digital -Q
SQUEEZESLAVE_PARAMETER=-n plugequal
SHAIRPORT_PARAMETER=-d sysdefault:CARD=IQaudIODAC -t hardware -m hw:CARD=IQaudIODAC -c Digital
USE_USB_DAC=0
USE_EQUALIZER=0
SYSTEM_USER=pi
YMPD_PARAMETER=–webport 8081

Logitech Media Server Status

Logitech Media Server Version: 7.9.1 – 1522157629 @ Fri Mar 30 12:27:11 CEST 2018
Hostname: LivingRoomPi
Server IP Address: 192.168.1.72
Server HTTP Port Number: 9000
Operating system: Debian – EN – utf8
Platform Architecture: armv7l-linux
Perl Version: 5.24.1 – arm-linux-gnueabihf-thread-multi-64int
Audio::Scan: 0.95
Database Version: DBD::SQLite 1.34_01 (sqlite 3.7.7.1)
Total Players Recognized: 3

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The issue first occurred when I moved to LMS Nightly 7.9 (7.9.2~1574315728_arm.deb)“on top“ of LMS 7.9.1. I have since formatted that SD, re-downloaded M2P 2.49 image, upgraded to 2.51, and re-applied all settings – and moved back to LMS 7.9.1. Still the same problem.

If I disable each RPi3 except the LMS host, there is no issue. It’s almost like each player is repeating the Spotty command to play track or skip track. I have tried playing around with the LMS Server Spotty Connect „end point“ settings to no avail (i’m not 100% what „should“ be set here, fyi).

The LMS server.log output doesn’t offer me any clues, so I’m stuck. Please can you assist?