The Dynon servos are part of Section 57, located here: https://www.vansaircraft.com/service...-revisions/57/
The servo install kits are located on Van's website, and search for "servo" in the store - two of the first four entries should pertain to Dynon (one for pitch/roll, one for yaw).
As for the music jack, I'm at a bit of a loss - I would have thought it was part of WH-00125 (common fuselage wiring harness), but I don't have it as part of that harness. There is a Aux Music Jack listed in Van's store (WH-00056), but it is $40. Looking at the wiring diagram, that is the correct part number, so we might have to buy that one. UPDATE
: I checked with SteinAir, and they forgot to include WH-00056 in my WH-00125 harness order, and are sending it out today.
Defrost fans and canopy warn switch are included in the finish kit - additional info about the canopy (and other avionics) are located here: https://www.vansaircraft.com/service...tter-feb-2018/