[SlimDevices: Touch] Any benefit to using DAC over analogue connectors?

Hi I currently connect my touch to my hifi using an rca to rca cable (The hifi only has analogue connectors). Would there be any benefit in getting a USB Dac or something like this

[SlimDevices: Touch] Problem with switching between Mysqueezebox and my Squeezebox server

Hi Hoping someone can help. I have a problem that when I switch from mysqueezebox.com to my squeezebox server running on a Readynas Duo and try to play music the track plays, but there is no sound. In order to get sound I have to switch back to mysqueezebox.com and then go to My Music again.