hi tally3tally, thanks for the shopping hints - but still too complex for me!
airport express does have digital output - both analogue and digital outputs in one jack -
Interfaces
* 802.11n wireless
* One 10/100BASE-T Ethernet port for connecting a DSL modem, cable modem, or Ethernet network
* USB port for connecting a USB printer4
* 3.5-mm audio minijack for analog or optical digital sound
* Built-in power supply
suri is correct ,
refer this page ,
Using Apple's AirPort Express with a DAC: A how-to guide | Crave - CNET
we need to get the DAC kit that has same i/p options as the the DAC mentioned .
About this thread :
--------------------------------------------------------
List of members requested and added for free build
-------------------------------------------------------
Suri - Member 1
spirovious - Member 2
?? - Member 3 , empty (fast filling

)
Confused members can wait for completion of the first 3 DACs.
--------------------------------------------------------
List of kits
--------------------------------------------------------
1 )
DAC y1: Just 31$ ..(did i calculate well)
+ toroidal PSU cost(unknown)/SMPS (approx 2$) + locally done case (<10$)
- Supports USB, S/PDIF coax and optical inputs (switchable).
-24-bit 192KHz high-performance Wolfson ?? oversampling DAC
2)
DAC y2
-uses Y1 board ,with extra add ons ,better performance than Y1
- Ultra-low jitter onboard CMOS oscillator for IS master clock
-Analog line outputs (RCA jacks and 3.5mm stereo mini jack),
with high output current and low output impedance.
3)
Opus dac :
$55.00 (un-assembled ,assembled =175$

)
-based around the Wolfson's top of-the-line WM8741
-It offers I2S and DSD inputs
-Separate analog and digital power sections with LDO
from National Semiconductor
there is shipping and customs,so if individually ordered
cost will go 30 -40% extra. And we all know group buys
fail all the time.
list to be updated ... inputs from forum members awaited
for a useful kit list