I came across a new version of the Banana Pi, Banana Pro. More info here: http://www.lemaker.org/
It has the same CPU (ARM® Cortex™-A7 Dual-Core1GHz), but with 1GB LAN, 802.11n wifi, I2S and I2C.
And it costs only €54.45 (for example, here: http://embeddedcomputer.nl/banana-pi-12/banana-pro.html#.VKjwH3uAqSo).
It seems like an ideal candidate for a audiophile player: just a little more CPU power than a RPI, GB lan or n-wifi for flawless high-res streaming, I2S for connection a DAC (the original Banana PI misses I2S) and I2C for bitperfect volume control. Or am I missing something?