I just installed Audio Recorder on an Ubuntu 12.04 and tried to record something from my system's output. Unfortunately it does not record anything. It shows up perfectly, as if it would record, but I just get "silent" files. I tried all possibilities with the audio source, both on Audio Recorder and on my system: "Built-in Audio Analog Stereo (Audio Output)", "System's default device" - on the app and "Analog Stereo Duplex" (the default) and "Analog Stereo Output" on my system, but the result is the same: silent audio files.
What should I do? Thank you,