I recommend to avoid the all-in-one servers unless you just cannot navigate a computer. They force you into using a certain playback software, ripping software, formats, resamplers, DSP etc.. These are usually not the latest and best performing available, such as the free tool XLD for ripping on Mac, Amarra, Jplay or Pure Music player, or the Izotope resampler. These will all be obsolete with in a year or two.
You are better off to just buy a Mac Mini and put the best software on it or pay someone like Mach2music.com to do it for you. If you juse need a transport, then buy a good USB converter. Then you can upgrade both software and hardware over time as things improve.
Steve N.
Empirical Audio