Sound files for Zooz Multisiren

I have a Zooz multisiren that so far I’ve not used very much. The biggest reason I’ve not used it much is that I’ve been having a tough time finding some good sound files to load onto it for use as door chimes and other various alerts. Most of the sounds I’ve found so far are pretty obnoxious or jarring - I’d like to find something that won’t annoy everyone in the house when it goes off.

In addition to general chimes/chirps/etc. I’d also like to find an easy way to generate some pre-defined spoken phrases. The siren has a few phrases built-in but I’d like a few more.

Does anyone have recommendations on where I can find some good quality sound files?