This are stationary iPod's.
They are called music servers as most of them support multi room so can act as a server for other players but all of them are able of direct playback.
The idea is nice, you have 1 box who does it all.
Comfort is the name of this game.
It has de look and feel of conventional audio equipment. Connect it to your amplifier just like a CD player and there you are. Some brands even stresses that it is NOT a computer.
What do you get?
Well, a computer running Linux or Windows with some proprietary software to manage your music collection and in general a very small display and a sound card.

These are the internals of a Merdian - Sooloos Source:One
From left to right:
Price €3,600.00
A silent PC combined with a high quality sound card or a outboard DAC will probably:
But you do have to do your own homework.
Buying a music server means a couple of engineers has done your homework.
A great comfort but, yes, engineers need payment too.
Auraliti Player KIT $899

The Embla offer a silent system playback system without any moving mechanical parts when playing from the built-in flash memory. The Embla is not a redesigned computer system; it is built from the ground up as a high performance audio playback system. Unlike other computer based playback products the Embla is based on our proprietary audio DSP design, allowing us to completely control the timing and reading of the discs. The Embla is designed as a true audiophile unit from the ground up and not a modified computer that can copy discs.
Network: ethernet
160GB HD
Formats:
Not a server (streaming audio not supported)
IP-based digital distributed audio system.
Colorado old model Vibe was a hard disk player. The new model is a true server solution.
The Color Touch screen includes a Class D amplifier.
Network: ethernet
6 independently- controlled streams
500/750 GB HD
Network: ethernet
160 - 750 GB HD
Supported Audio Formats:
ENCODE: MP3, FLAC
DECODE: PCM, MP3, FLAC, WMA, AAC
Streams: 4 (probably proprietary format)
Internet database: Gracenote
Yes, you can connect it with a cat 5 cable to.
Network: ethernet/ Wifi
80 / 160 GB HD
OS: Linux
Player software: Hermstedt
Streaming: UPnP AV(Twonky Vision)
Recording
Playback and Multi-room streaming
Supported sampling rate for recording: 44.100 Hz
Supported sampling rate for playback: 44.100 Hz

Part of the Reference line including electrostatic speakers, subwoofer and a 52-inch LCD TV
Formats
RAID operation for data security
Database: Gracenotes
Connectors

Remote control and/or touch screen (not included).
Player software: J River.
DAC
Processor
Color LCD
4.3" wide-aspect ratio, high-resolution touchscreen (480 x 272 pixels)
Hard Drive
Design
TEAC CD-R/RW
Networking
Wired - Gigabit Ethernet
Wireless
Audio Outputs
Digital Inputs
S/P DIF optical Toslink, 24k gold-plated
Audio Formats
WAV, FLAC, MP3 (128 and 320 kbit/s), AAC (128 kbit/s)
Bit rate: 16bits, 20bit, 24bits, Sampling Frequency: 10kHz up to 200kHz
Other Ports
1x USB 1.1/2.0
A features comparison by Olive

| Audio | System | ||
| Bit Depth | 24-bit | Storage Options | 2x250GB, 2x500GB, 2x750GB (RAID 1) |
| Sampling Rate | 96kHz | Power On | < 30 Seconds |
| Frequency Response | 22Hz-22kHz,-0.4,-0.4dB | Power Off | < 10 Seconds |
| Dynamic Range | 104dB (A-weighted) (D/A) 100.4dB (A-weighted) (A/D) |
Power Consumption | < 40W (Max) |
| THD | < 0.002% | Supply Voltage | 120/230 VAC 60Hz/50Hz |
| Audio Formats | Wav FLAC (lossless) MP3 Ogg Vorbis |
Control | Wireless touchscreen control Wired Ethernet (direct commands and web control) Serial Port Integration libraries |
The Antenaeum (£4,500) is technically identical but has storage up to 1.5 TB (Raid 1).

The S.Series ($ 18,500) no longer exist, they went multi media at a more affordable price tag.
A nice optical illusion. If you stare hard at this picture for 5 minutes you see a fat control at the right.
Sooloos has become part of Meridian. This deprived us of the girl, not of the price tag.