http://www.amember.com/docs/Integration/Wordpress http://www.amember.com/p/video/#wp The plugin itself is included into aMember Pro v4 no need to download anything.
Thanks Alex, looks like I have to upgrade first, do you have a migration guide from 3 to 4? Also, I can't find "authorize.net SIM" payment plugin in the new version.
http://www.amember.com/docs/Migration_from_legacy_aMember_Pro_v3 Authorize.Net SIM is not implemented. We have implemented Authorize.Net CIM and upcoming 4.2.12 release will allow to use credit card forms hosted by Authorize.Net, but looking like as part of your website.