Yes I have done this ..

I download the icecast-2.3.3-kh8.tar.gz to /usr/local/

I then used this to to extract
tar zxf icecast-2.3.3-kh8

then i see a folder like this
 icecast-kh-icecast-2.3.3-kh8

So i run this .
/usr/local/centovacast/sbin/enable_package ICECAST /usr/local/icecast-kh-icecast-2.3.3-kh6

/usr/local/icecast-kh-icecast-2.3.3-kh6 does not exist

That's 2 different packages

You say you downloaded
 icecast-2.3.3-kh8.tar.gz

and that you run
icecast-kh-icecast-2.3.3-kh6

ok gonna do this again I have removed all the files & folders im gonna do it how i have it step by step

cd /usr/local/

wget https://github.com/karlheyes/icecast-kh/archive/icecast-2.3.3-kh8.tar.gz

LS

I now see this

[root@x1hosting local]# ls
bin          etc    icecast-2.3.3-kh8  lib      sbin   src
centovacast  games  include            libexec  share


So now i do this

tar zxf icecast-2.3.3-kh8

now I see

[root@x1hosting local]# ls
bin          etc    icecast-2.3.3-kh8             include  libexec  share
centovacast  games  icecast-kh-icecast-2.3.3-kh8  lib      sbin     src

So this is the folder it has extracted to ..

Now what do i do ??
/usr/local/centovacast/sbin/enable_package ICECAST /usr/local/icecast-kh-icecast-2.3.3-kh8/src/icecast

then it show this
/usr/local/icecast-kh-icecast-2.3.3-kh8/src/icecast does not exist

I don't know do i need to install it or anything ??