Note: regrettably the Intel Edison has been canceled by Intel, leaving the market to arguably inferior products.
Bluetooth speakers can easily be used with the Intel Edison to wirelessly play sound. Perhaps use your Edison to create your own homebrew Sonos®-like speaker system.
Setup Bluetooth sound on Intel Edison
opkg install alsa-utils kernel-module-snd-usb-audio bluez5 gstreamer pulseaudio opkg install kernel-module-ftdi-sio
configure Linux Bluetooth audio
This process is generic to any Linux computer with Bluetooth, including the Intel Edison:
rfkill unblock bluetooth bluetoothctl power on agent on scan on pair <id you find> trust <id> connect <id you paired with>