Hello, my computer is conected with the iec958 interface to my AV-Receiver. Unfortunately i have not sound on my AV-Reicerver when i play a MP3 on my computer. But if i play an file with AC3 or DTS audio i can hear the sound. I tested this with VLC, with the options "interface alsa" and "use spdif" . On my computer runs Debian Testing. I also tried this with a Puppy Linux installatoion on the same computer. On the Puppy Linux all work fine. I also use the program aplay for tests with the following results. This commnad works, i hear the sound: $ aplay -D iec958:CARD=SB,DEV=0 /usr/share/sounds/ekiga/ring.wav This command works not, no sound. $ aplay -D plughw:0,1 /usr/share/sounds/ekiga/ring.wav The alsa hareware adresse should be correct. $ root@foobar:~# aplay -l **** Liste der Hardware-GerÃte (PLAYBACK) **** Karte 0: SB [HDA ATI SB], GerÃt 0: VT1708S Analog [VT1708S Analog] Sub-GerÃte: 2/2 Sub-GerÃt #0: subdevice #0 Sub-GerÃt #1: subdevice #1 Karte 0: SB [HDA ATI SB], GerÃt 1: VT1708S Digital [VT1708S Digital] Sub-GerÃte: 1/1 Sub-GerÃt #0: subdevice #0  On the Puppy Linux both commands work. It seems on my Debian installation ist something worng. But i can't found it. Any help?  Here some more information. $ root@foobar:~# aplay -L null Discard all samples (playback) or generate zero samples (capture) front:CARD=SB,DEV=0 HDA ATI SB, VT1708S Analog Front speakers surround40:CARD=SB,DEV=0 HDA ATI SB, VT1708S Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=SB,DEV=0 HDA ATI SB, VT1708S Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=SB,DEV=0 HDA ATI SB, VT1708S Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=SB,DEV=0 HDA ATI SB, VT1708S Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=SB,DEV=0 HDA ATI SB, VT1708S Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=SB,DEV=0 HDA ATI SB, VT1708S Digital IEC958 (S/PDIF) Digital Audio Output  $ root@foobar:~# amixer Simple mixer control 'Master Front',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 31 [100%] [12.00dB] [on] Front Right: Playback 31 [100%] [12.00dB] [on] Simple mixer control 'PCM',0 Capabilities: pvolume penum Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 255 [100%] [0.00dB] Front Right: Playback 255 [100%] [0.00dB] Simple mixer control 'Front',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 42 Mono: Front Left: Playback 42 [100%] [0.00dB] [on] Front Right: Playback 42 [100%] [0.00dB] [on] Simple mixer control 'Front Mic Boost',0 Capabilities: cvolume penum Capture channels: Front Left - Front Right Limits: Capture 0 - 3 Front Left: Capture 0 [0%] [0.00dB] Front Right: Capture 0 [0%] [0.00dB] Simple mixer control 'Surround',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 42 Mono: Front Left: Playback 42 [100%] [0.00dB] [on] Front Right: Playback 42 [100%] [0.00dB] [on] Simple mixer control 'Center',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 42 Mono: Playback 42 [100%] [0.00dB] [on] Simple mixer control 'LFE',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 42 Mono: Playback 42 [100%] [0.00dB] [on] Simple mixer control 'Side',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 42 Mono: Front Left: Playback 42 [100%] [0.00dB] [on] Front Right: Playback 42 [100%] [0.00dB] [on] Simple mixer control 'Line',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 0 [0%] [-34.50dB] [off] Front Right: Playback 0 [0%] [-34.50dB] [off] Simple mixer control 'CD',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 23 [74%] [0.00dB] [on] Front Right: Playback 23 [74%] [0.00dB] [on] Simple mixer control 'Mic',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 0 [0%] [-34.50dB] [off] Front Right: Playback 0 [0%] [-34.50dB] [off] Simple mixer control 'Mic Boost',0 Capabilities: cvolume penum Capture channels: Front Left - Front Right Limits: Capture 0 - 3 Front Left: Capture 3 [100%] [30.75dB] Front Right: Capture 3 [100%] [30.75dB] Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Simple mixer control 'IEC958 Default PCM',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Simple mixer control 'Capture',0 Capabilities: cvolume cswitch penum Capture channels: Front Left - Front Right Limits: Capture 0 - 31 Front Left: Capture 19 [61%] [12.00dB] [on] Front Right: Capture 19 [61%] [12.00dB] [on] Simple mixer control 'Capture',1 Capabilities: cvolume cswitch penum Capture channels: Front Left - Front Right Limits: Capture 0 - 31 Front Left: Capture 0 [0%] [-16.50dB] [on] Front Right: Capture 0 [0%] [-16.50dB] [on] Simple mixer control 'Input Source',0 Capabilities: cenum Items: 'Stereo Mixer' 'Mic' 'Line' 'CD' Item0: 'Stereo Mixer' Simple mixer control 'Smart 5.1',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [off] ------------------------------------------------------------------------------ Achieve Improved Network Security with IP and DNS Reputation. 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