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Date & Time: Any Day or Time
Frequency: Every Time
World name: Goblin
Character name: Lili Noct
Retainer name: NA
NPC name: NA
Monster name: NA
Class/Level: NA
Party or solo: NA
In-game time: NA
Area and coordinates: Orchestration player on Island Sanctuary
Housing: NA
Steps:
1. Set Song on Orchestration Player
2. Leave
3. Song is reset

It looks like the Orchestration player on the Island Sanctuary is not the updated one used for housing that can save playlists and actually keeps the song you set it to.

Hopefully just a simple fix of swapping out item ID's or something.