The latest 1.19.3 Fabric version of Voices of Wynn (beta 1.2) does not play recordings when the "NPC Dialogues" feature is enabled in Wynntils/Artemis (0.0.2-alpha.18). Disabling the feature in Wynntils' settings immediately restores VoW recordings.
I'm not a Fabric modder so I don't know for sure if this is actually how it works, but it seems like Wynntils is canceling the system chat packet event and VoW is listening to that same same event.
wynntils cancels the packet: https://github.com/Wynntils/Artemis/blob/main/common/src/main/java/com/wynntils/handlers/chat/ChatHandler.java#L100
wynntils injects their mixin: https://github.com/Wynntils/Artemis/blob/main/common/src/main/java/com/wynntils/mc/mixin/ClientPacketListenerMixin.java#L297
vow injects its mixin: https://github.com/Team-VoW/WynncraftVoiceProject/blob/main/1.18/src/main/java/com/wynnvp/wynncraftvp/events/mixins/MixinChatListener.java#L15