Hi Pedro,
Yes there is a simple way to make this setup work. You can find the Max2Play plugin „DLNA Server“, which lets you install a small DLNA server with the option to directly give a path for your media files. Then, you can use simple Apps like BubbleUPnP to connect that server with your speakers as renderers.
You can also use the Squeezebox Server, it is also recognized as a server element by the DLNA apps.