I know this is a recurring topic, and I've been tracking this list for months, but I'd like to hear from those of you who have been working on DSP or FPGA + A/D solutions to replace the PC + soundcard. I am aware of the other projects out there, but I'm curious if there are any that have gained enough traction and support where more than just a few people are working on them.
I'm thinking the most cost-effecive hardware solution is going to be a DSP which integrates the 2-channel A/D conversion of the sound card and the IQ demodulation of the software, plus the final D/A audio output in one device.
Alternately, maybe a small single-board computer, like the beagleboard that was recently posted might make more sense. Something like this could run end-user applications like WSPR without using a PC at all, well then that would be the ticket.
Are any of these reasonably-priced DSP/FPGA/SBC projects reaching critical mass? I see a lot of neat ideas going in different directions, but it would benefit the ham community if one of them gained traction and got a decent user base...have any done so?