$ file Record000.amr Record000.amr: Adaptive Multi-Rate Codec (GSM telephony) $ sox Record000.amr Record000.wav sox formats: no handler for detected file type `amr-nb' But I have the amr libraries installed: ii libamrnb3 7.0.0.2-0.1medibuntu1 ii libamrwb3 7.0.0.3-0.0medibuntu1 ii sox 14.2.0-1 How I get sox to use them? -- Thanks, Adam