Here is a patch to add the arts use flag to kdebindings, so that it can be compiled without arts support.
Steps to Reproduce:
This is the first time I've ever sent in a patch for anything, please let me
know if you need more info, or if it is in the wrong format. Thanks
Created attachment 25472 [details, diff]
The patch itself.
kde.eclass does this for all ebuilds, if >=kde-3.3