Many of our clients are successfully using IceCast-kh with Centova Cast. What specifically do you need supported?
The only reports of incompatibilities were from a (comparatively very small) set of users who experienced some odd behavior a very long time ago and reported it on the IceCast forums. Karl responded and indicated that Centova Cast was doing various weird things such as trying to parse output from IceCast's stdout and things of that nature, and indicated that that was the reason for the problem.
The problem is that Centova Cast does not, nor has it ever read IceCast's stdout, nor did any of Karl's other hypotheses match up with Centova Cast's actual usage of IceCast. I got in touch and mentioned this, but received no reply. This incorrect information still remains on the IceCast forums (and, I believe, in a FAQ or sticky post I saw there awhile back, although admittedly I haven't been back in awhile.)
Further complicating matters, I myself have been unable to reproduce any problems whatsoever when testing IceCast-kh with Centova Cast, nor have hundreds of our clients who are using it in production.
So in a nutshell... if anyone is experiencing compatibility problems between Centova Cast and IceCast-kh and can provide root access to an affected server, please open a ticket with our helpdesk and we'll get on it. Failing that, I have no reason to believe that IceCast-kh will work any differently with Centova Cast than IceCast-trunk.