lol, ok got it, was too easy....
I setup my youtube channel ahead of time with api keey and so on....
then in OBS I did the following
1) Added new source
2) uncheck local
3) Input was in my case http://streams.justclassicrock.com:8012
4) input format: mp3
5) click ok
6) start streaming.
Went to my youtube dashboard and it just started streaming by itself....