A little refresher course:
Disney Club discounts are only available through the Walt Disney Travel Company in package form. There is a package offered that is "room-only" and it is called the Basic Plan. You can get the DC discount on this (or any of the others) package. As always, discounts are limited.
The "code" discounts or Annual Pass Holder (AP) discounts are booked through Central Reservations. These are true room-only reservations.
If you book a Basic Plan package with Disney Club discounts and then find a better room rate with a code or other discount-type, you have to cancel the package and rebook with Central Reservations. You are not able to transfer your deposit from one place to the other. Your first deposit will be refunded.
You are not able to use the "code" discounts or Annual Pass Holder discounts with a package booked through the WDTC. Usually the only discounts available on packages are Disney Club and AAA. Disney has offered other discounts this year to boost occupancy. In fact, they are offering a special package now on their website for travel between 7/15 and 8/25.
I hope this is helpful!