Ok, there all good Informations. Such like "you should not install csound manually, you should it install by apt-gert". But there are no Informations which I should do to install the osc-Oppcodes. And I not familiar with such thinks like " ass ... to souces.list. But I'm very silly. And I'm very blind. So I hope you will be at this point longer my friend. And I will try to do what ever you say.