Set Crossfade Mode

Turns crossfade on or off for the signed-in user's Now Playing queue. This updates a single audio transition preference without modifying tracks, groups, or other playback settings. Returns the applied boolean setting in a Value wrapper.

Use this when: the user toggles crossfade in playback or audio settings. Use this dedicated endpoint instead of Replace Queue for a single preference change. Other devices can pick up the updated IsCrossfadeMode on their next Get Queue after EditVersion increments.

Security Model

oAuth