Re: titleformat: any way to know which device requested it?

>> $client->currentPlaylistChangeTime( Time::HiRes::time() );
>>
>> That should invalidate the cache.
> 
> Thank you. Actually, currentPlaylist*Change*Time didn't work for me but
> currentPlaylist*Update*Time did for some reason. Didn't find anything
> else that worked either, so that's cool.

Whatever works :-). FWIW: I'm actually a bit confused that you'd need to 
hack this, as there should be a check for external formatters (see 
https://github.com/Logitech/slimserver/blob/e11fa311195b6ba3611007221ce399b7bb09075f/Slim/Web/Pages/Playlist.pm#L77).