ProtegeManiac
Headphoneus Supremus
The only point that can be improved in the usabiliy is to get rid of the USB (OTG) cable between my S3 and my DAC. For headphone use this is not really a problem but for music via loudspeakers you need a long cable across the room. I've done some experiments with a second android device and I succeeded in a cordless setup:
This is the same problem with the iPod DACs being used for speaker systems, especially if you aren't using them in the same room as the home theater where you have a display from which to see and navigate the contents. For speaker systems I'm more inclined to use the Android phone or tablet as a remote, then use a dedicated network music server with a remote app. You can now see your entire library on the Android. The problem is that some of these don't have wireless, or you pay extra for it.
If that's too expensive (cheapest network music servers I know are the Cocktail Audio X10 and Aune S1) and you might already have a DAC lying around, there are $100 Android miniPC's that can be configured to run headless. They also have WiFi built in so no cables nor extra fees for wireless antennae, and you might still have USB ports to hook up HDDs. Also you can use an older laptop, then download a non-brand specific remote app. Paid versions can also show you more info so you can navigate your way around the media player on Windows.