PC = Personal Computer.... the Raspberry Pi is a SBC = Single Board Computer. Thus, it IS "
a little PC"... or a mini-PC. For instance, if you install the Debian Operating System on your Raspberry Pi, you can then install other programs to run on (top of) Debian. Similar to installing programs on top of a Windows Operating System PC. Windows being the Operating System, with programs installed on top of it. RuneAudio is the software, RuneUI is the user interface, and RuneOS is the Operating System. The diffference here is that all three, RuneAudio, RuneUI, and RuneOS is all in one 'package'. While Windows has many purposes, RuneAudio has only one... "
Take an inexpensive, silent and low-consumption mini-PC and make it perform as an high fidelity digital source." No Word Processor, no Games, no, this, no that. One purpose. Have a little read...
http://www.runeaudio.com/about/
- 1. "RuneAudio is a free and open source software with one specific objective: to transform an embedded platform (a cheap, silent and low-consumption mini-PC) into an Hi-Fi digital music player."
2. "RuneAudio runs on RuneOS, a custom built GNU Linux operating system, based on Arch Linux."
3. "RuneAudio features RuneUI, an unique integrated and easy to use interface."
Anyway, you have the Pi2 Design Media 502DAC PRO (
http://www.pi2design.com/502dac_pro.html).
"
The designer/seller said it would work before I bought it." <----- Did he/they say it would work with RuneAudio? Or did he/they say it would work with the Raspberry Pi? You have the hardware (Raspberry Pi), then the Operating System (RuneOS), then the Software (RuneAudio). Oh so complex, I know. I will not list my I.C.T (Information Communications Technology) quals here, but they are extensive, and even I set it and forget it. Meaning: if it ain't broke, don't fix it. Tinkering always causes problems, always. LoL!!!