I cannot raise the IEC958 volume in he alsa mixer.  I can mute ad unmute but only that. I have no sound in the spdif ouput, only in the HDMI output. I am looking for help via google and i cant find any hint that really works.  I use the 9.10 Ubuntu ans the aplay -l shows:
Lista de Dispositivos PLAYBACK Hardware ****
placa 0: SB [HDA ATI SB], dispositivo 0: ALC1200 Analog [ALC1200 Analog]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
placa 0: SB [HDA ATI SB], dispositivo 1: ALC1200 Digital [ALC1200 Digital]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
placa 1: HDMI [HDA ATI HDMI], dispositivo 3: ATI HDMI [ATI HDMI]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
xbmc@xbmc-desktop:~$ aplay -l
**** Lista de Dispositivos PLAYBACK Hardware ****
placa 0: SB [HDA ATI SB], dispositivo 0: ALC1200 Analog [ALC1200 Analog]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
placa 0: SB [HDA ATI SB], dispositivo 1: ALC1200 Digital [ALC1200 Digital]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
placa 1: HDMI [HDA ATI HDMI], dispositivo 3: ATI HDMI [ATI HDMI]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0
My lspci -v
00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
	Subsystem: ASUSTeK Computer Inc. Device 82f1
	Flags: bus master, 66MHz, medium devsel, latency 0
	Capabilities: <access denied>

00:01.0 PCI bridge: ASUSTeK Computer Inc. Device 9602
	Flags: bus master, 66MHz, medium devsel, latency 64
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
	I/O behind bridge: 0000d000-0000dfff
	Memory behind bridge: fbc00000-fbdfffff
	Prefetchable memory behind bridge: 00000000d0000000-00000000dfffffff
	Capabilities: <access denied>
	Kernel modules: shpchp

00:05.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 1)
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
	Memory behind bridge: fbe00000-fbefffff
	Capabilities: <access denied>
	Kernel driver in use: pcieport-driver
	Kernel modules: shpchp

00:06.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2)
	Flags: bus master, fast devsel, latency 0
	Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
	I/O behind bridge: 0000e000-0000efff
	Memory behind bridge: fbf00000-fbffffff
	Prefetchable memory behind bridge: 00000000faf00000-00000000faffffff
	Capabilities: <access denied>
	Kernel driver in use: pcieport-driver
	Kernel modules: shpchp

00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [IDE mode] (prog-if 01)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 22
	I/O ports at c000 [size=8]
	I/O ports at b000 [size=4]
	I/O ports at a000 [size=8]
	I/O ports at 9000 [size=4]
	I/O ports at 8000 [size=16]
	Memory at fbbff800 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ahci

00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller (prog-if 10)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 16
	Memory at fbbfe000 (32-bit, non-prefetchable) [size=4K]
	Kernel driver in use: ohci_hcd

00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller (prog-if 10)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 16
	Memory at fbbfd000 (32-bit, non-prefetchable) [size=4K]
	Kernel driver in use: ohci_hcd

00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller (prog-if 20)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 17
	Memory at fbbff000 (32-bit, non-prefetchable) [size=256]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller (prog-if 10)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 18
	Memory at fbbfc000 (32-bit, non-prefetchable) [size=4K]
	Kernel driver in use: ohci_hcd

00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller (prog-if 10)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 18
	Memory at fbbfb000 (32-bit, non-prefetchable) [size=4K]
	Kernel driver in use: ohci_hcd

00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller (prog-if 20)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 19
	Memory at fbbfa800 (32-bit, non-prefetchable) [size=256]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3a)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: 66MHz, medium devsel
	Capabilities: <access denied>
	Kernel modules: i2c-piix4

00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller (prog-if 8a [Master SecP PriP])
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 16
	I/O ports at 01f0 [size=8]
	I/O ports at 03f4 [size=1]
	I/O ports at 0170 [size=8]
	I/O ports at 0374 [size=1]
	I/O ports at ff00 [size=16]
	Capabilities: <access denied>
	Kernel driver in use: pata_atiixp

00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
	Subsystem: ASUSTeK Computer Inc. Device 82fe
	Flags: bus master, slow devsel, latency 64, IRQ 16
	Memory at fbbf4000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: HDA Intel
	Kernel modules: snd-hda-intel

00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 0

00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge (prog-if 01)
	Flags: bus master, 66MHz, medium devsel, latency 64
	Bus: primary=00, secondary=04, subordinate=04, sec-latency=64

00:14.5 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI2 Controller (prog-if 10)
	Subsystem: ASUSTeK Computer Inc. Device 82ef
	Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 18
	Memory at fbbf9000 (32-bit, non-prefetchable) [size=4K]
	Kernel driver in use: ohci_hcd

00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
	Flags: fast devsel
	Capabilities: <access denied>

00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
	Flags: fast devsel

00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
	Flags: fast devsel

00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
	Flags: fast devsel
	Capabilities: <access denied>
	Kernel driver in use: k8temp
	Kernel modules: k8temp

01:05.0 VGA compatible controller: ATI Technologies Inc Radeon HD 3200 Graphics
	Subsystem: ASUSTeK Computer Inc. Device 82f1
	Flags: bus master, fast devsel, latency 0, IRQ 28
	Memory at d0000000 (32-bit, prefetchable) [size=256M]
	I/O ports at d000 [size=256]
	Memory at fbdf0000 (32-bit, non-prefetchable) [size=64K]
	Memory at fbc00000 (32-bit, non-prefetchable) [size=1M]
	Capabilities: <access denied>
	Kernel driver in use: fglrx_pci
	Kernel modules: fglrx, radeon

01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller
	Subsystem: ASUSTeK Computer Inc. Device 82f1
	Flags: bus master, fast devsel, latency 0, IRQ 19
	Memory at fbde8000 (32-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: HDA Intel
	Kernel modules: snd-hda-intel

02:00.0 FireWire (IEEE 1394): JMicron Technology Corp. IEEE 1394 Host Controller (prog-if 10)
	Subsystem: ASUSTeK Computer Inc. Device 8313
	Flags: bus master, fast devsel, latency 0, IRQ 17
	Memory at fbeff800 (32-bit, non-prefetchable) [size=2K]
	Memory at fbeff400 (32-bit, non-prefetchable) [size=128]
	Memory at fbeff000 (32-bit, non-prefetchable) [size=128]
	Memory at fbefec00 (32-bit, non-prefetchable) [size=128]
	Capabilities: <access denied>
	Kernel driver in use: ohci1394
	Kernel modules: firewire-ohci, ohci1394

03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
	Subsystem: ASUSTeK Computer Inc. Device 82c6
	Flags: bus master, fast devsel, latency 0, IRQ 27
	I/O ports at e800 [size=256]
	Memory at fbfff000 (64-bit, non-prefetchable) [size=4K]
	Memory at faff0000 (64-bit, prefetchable) [size=64K]
	Expansion ROM at fbfc0000 [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: r8169
	Kernel modules: r8169
and I really don know what it means !!!
Please anybody can help me ? 
It seems my bug is almost the same related to others here!
I would like to use the spdif output to send digital sound o my HT receiver using XBMC with DTS, 5.1, etc., and the HDMI to sen the video signal to my LCD TV. 
All I get is the video signal and the sound signal via HDMI to the LCD TV !!!
Thanks
Mario

I am new in the linux world so, I have no idea where to go and what to do !!!