WHA with source control from keypads
I've been researching WHA for the past couple weeks and mostly I find a something interesting and go "wow, that's another company I've never heard of" so it's a little difficult to sort everything out and directly search for products. Can folks provide names of products that have source level control from the keypads, like some Russound and NuVo solutions. I'd like each zone to be able to not just select source and control volume, but play/pause, seek, etc.
For bonus points, I like that one of the NuVo products has teachable IR control of source components. Are there other products with similar interfacing with unlike-branded sources or any that can create RS-232 macros to be initiated from the keypads that control source components and read back metadata from unlike-branded sources? I'll understand if this last one is "yeah...get a Crestron" and I'll just have to live without.