Problem changing audio output

Using v3.5.14 on a MacBook Pro under OS Mojave. Want to change audio output. Message “Please stop playback to change audio settings” I have one CD in my library and it is not playing. I have Bongiovi Acoustics installed but not loaded when Audirvana is running. Nothing I do removes the message, therefore I cannot change output.

Audirvana Mac Version 3.5.14 (3544)
macOS 10.14.5 with 16384MB RAM

Registered to Duncan Jones

SIGNAL PROCESSING:

Polarity Inversion:
	Globally: OFF
	Per track: ON
Effects plugins NOT ACTIVE

UPSAMPLING:
SoX not in use
SoX filter parameters
Bandwidth at 0dB = 99.5
Filter max length = 30000
Anti-aliasing = 100
Phase = 66

AUDIO VOLUME:
Max allowed volume: 100
Replay Gain: None
SW volume control: OFF

LIBRARY SETTINGS:
Sync list: 1 folders
AUTO: /Volumes/6 Tb - Music I 1/L - P/O/Orchestral Manoeuvres in the Dark/2016 - Architecture and Morality, Dazzle Ships - Live at the Royal Albert Hall
Library database path: /Users/duncanjones/Library/Application Support/Audirvana/AudirvanaPlusDatabaseV2.sqlite

ACTIVE STREAMING SERVICES

=================== AUDIO DEVICE ========================

CoreAudio audio path, buffer I/O frame size: 4096

Max. memory for audio buffers: 13312MB

Local Audio Engine:
Exclusive access: Enabled
Integer mode: Enabled

Preferred device:
BH900
Model UID:ffff 0
UID:00-17-53-06-0f-91:output

Currently playing in standard 32bit float mode
Device: 2ch Mixable linear PCM Interleaved 32bits little endian Signed Float, 8 bytes per frame 44.1kHz

Active Sample Rate: 44.1kHz
Hog Mode is on

Bridge settings:
Sample rate limitation: none
Sample rate switching latency: none
Limit bitdepth to 24bit: OFF
Mute during sample rate change: ON

Selected device:
Local audio device
ID 0x2a DPSReflector Manufacturer:Bongiovi Acoustics
Model UID:DPSAudioReflector UID:DPSReflectorEngine:0

1 available sample rates up to 44100Hz
44100
Audio buffer frame size : 14 to 4096 frames
Current I/O buffer frame size : 4096
Volume Control
Physical: Yes
Virtual: Yes
MQA capability
Auto-detect MQA devices: Yes
Not a MQA device, user set to not MQA
DSD capability: Unhandled
Device audio channels
Preferred stereo channels L:1 R:2
Channel bitmap: Ox3, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1

Audio channels in use
Number of channels: 2
Use as stereo device only: No
Simple stereo device: Yes

1 output streams:
Number of active channels: 2, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1

Stream ID 0x2b 2 channels starting at 1
1 virtual formats:
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz

2 physical formats
2 ch Mixable linear PCM Interleaved 32 big endian Signed Integer 44.1kHz
2 ch Mixable linear PCM Interleaved 24 big endian Signed Integer 44.1kHz

Local devices found : 6
Device #0: ID 0x58 DisplayPort Manufacturer: Apple Inc. Model UID: AppleGFXHDA:0 UID: AppleGFXHDAEngineOutputDP:0:{FF7F-9000-0000000E}
Device #1: ID 0x4e Built-in Output Manufacturer: Apple Inc. Model UID: AppleHDA:57 UID: AppleHDAEngineOutput:1F,3,0,1,1:0
Device #2: ID 0x2a DPSReflector Manufacturer: Bongiovi Acoustics Model UID: DPSAudioReflector UID: DPSReflectorEngine:0
Device #3: ID 0x45 MMAudio Device Manufacturer: MMAudio Device contributors Model UID: MMAudioDeviceModelUID UID: MMAudioDevice
Device #4: ID 0x4a MMAudio Device (UI Sounds) Manufacturer: MMAudio Device contributors Model UID: MMAudioDeviceModelUID_UISounds UID: MMAudioDevice_UISounds
Device #5: ID 0x33 AirParrot Manufacturer: squirrels Model UID: com_squirrels_driver_AudioDevice:AirParrotSpeakers UID: com_squirrels_driver_AudioEngine:0

UPnP devices found : 0

You need to STOP the playback and not the Pause button