AirPlay OS sound to multiple airplay devices

[ea9]

Hi guys ! I come with a difficult question !

Mac Mini 2014 and Macbook Pro retina 2014

Currently I can output music from iTunes to multiple airport expresses.

I would like to do the same from the OS Directly. (To play soundcloud music)
The only option I've found was to airplay the sound to 1 airport express at a time, wondering if there was a way to have multiple airports working together. (2 for the moment)

thanks in advance,
Hope i'm in the right section... not really sure where to ask this.

 

[bobr1952]

The best solution that I've found--and one used by a lot of Mac users is Rogue Amoeba Airfoil. Well supported product that has been around for a long time. Works flawlessly.

https://www.rogueamoeba.com/airfoil/