Okay. I was thinking about maybe building the adapter in the thread and connect some LEDs. That should work right?
>But I'm not sure where to get ground. From somewhere inside the case?
Oh wait I get it. The ground pin is a pin set for input right?

About connecting pins to themselves..what if I oops and connect two set output pins to each other? That doesn't sound too good.

Guess I should check the ribbon cable between the boards first as a warm up. Just a resistance check for each pin or something.

But I'd need some kind of hardware device to sample the output of the pins, right?
There is no way to just try to write to a pin and see if it can be set from software? Maybe some error message if something goes wrong?
I'm not too hot with designing my own hardware 

Something like
Set pin 1 to 1
Read pin 1: 1. OK
Set pin 2 to 1
Read pin 2: 0. ERROR
woops, line 2 is broken.

Would it be possible to include the new Easycap driver in coming releases?

Does anyone know if there is a way to try to read/write to the individual SDIO pins?

I think my SDIO port is broken and it would be nice to know if any pins aren't connected properly.

Did you drop making releases for the next kernel candidates? I kinda miss having those. Ie -rc2, - rc3 etc.

Could you upload the WAV somewhere? I'd like to make some tests