[chuck-users] no devices found

hi i am new to chuck. I am trying to run it on Linux (Debian unstable) but i get this error: $ chuck foo.ck [chuck]: (via rtaudio): no devices found for compiled audio APIs! [chuck]: cannot initialize audio device (try using --silent/-s) I tried on window goes fine. But my main production system is debian. However i am not expert on setting linux audio, still learning slowly. I installed ChucK with apt-get and i have version 1.2.0.7.dfsg-1 any ideas? thanks enrike