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So I'm piddling away with the ?B parts as I work out details for my case and stuff, and I can't get the audio connector on.? After an exhaustive investigation, I resort to counting.

The connectors on the board have eight pins, and the harnesses have seven holes.

I think I can make it work.

My first run uBitx came with two 8 pin harnesses, plus a 3 and a 2, appropriately enough.
The Bitx40 had a 5 pin harness, but no 7 pin harness.
Wonder where some 7 pin headers slipped into the mix, perhaps the vendor to hfsignals?

Could be that a bunch of uBitx kits went out with the wrong harness.
If others wind up with 7 pin harnesses in their kit, here's how to deal with it:
Audio 8 pin connector into the uBitx main board can skip the ground at pin 8, plenty of other grounds.
Likewise, the Raduino 8 pin connector could do without A7 at pin 1, which is a "spare" in Farhan's code.
Have to shave off the plastic keying guide on one end of the harness connector,
note that it's a different end to be butchered on the two connectors.

I'm going to keep the colors the same as the wire up diagram, so I'll be using black to A on the encoder on one and black to the speaker ground on the other.? I'll add a violet from a spare for the mic.? The violet is not used on the Raduino socket.

And you make an interesting point, that the numbers from pin numbers 1-8 seem to be backward with respect to the colors.

Good idea to keep the colors consistent,
I had no clue what color scheme was chosen for your 7 pin harnesses.

I'll credit you with the point about colors being backward with respect to pin numbers,
as it hadn't occurred to me.? (For those that don't quite follow, the wire colors would
otherwise agree with the resistor color band code.)

To add another data point, my first run μBITX came 2 x 8 pin, 1 x 3 pin, 1 x 2 pin harnesses.

By running the pattern backwards does Violet regain her virtue?? (please apply apologies in advance if needed)