How to use line in port to play music from external source

Has this ever worked for you? If so what happened/when did it stop working? What does your "Sounds" setting say as far as your input and output?

No it has never worked for me. I am trying this the first time.

pactl list sources
Quelle #3
Status: SUSPENDED
Name: alsa_input.pci-0000_00_1b.0.analog-stereo
Beschreibung: Eingebautes Tongerät Analog Stereo
Treiber: module-alsa-card.c
Abtastwert-Angabe: s16le 2ch 44100Hz
Kanalzuordnung: front-left,front-right
Besitzer-Modul: 8
Stumm: nein
Lautstärke: front-left: 20726 / 32% / -30,00 dB, front-right: 20726 / 32% / -30,00 dB
Verteilung 0,00
Basis-Lautstärke: 6554 / 10% / -60,00 dB
Ziel-Monitor: k. A.
Latenz: 0 usec, eingestellt 0 usec
Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
Eigenschaften:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC887 Analog"
alsa.id = "ALC887 Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xd1c00000 irq 26"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "27d8"
device.product.name = "NM10/ICH7 Family High Definition Audio Controller (GA-D525TUD (Realtek ALC887))"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "Eingebautes Tongerät Analog Stereo"
alsa.mixer_name = "Realtek ALC887"
alsa.components = "HDA:10ec0887,10ec0887,00100202"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
analog-input-front-mic: Vorderes Mikrofon (priority: 8500, not available)
analog-input-rear-mic: Rückwärtiges Mikrofon (priority: 8200, not available)
analog-input-linein: Eingang (priority: 8100, available)
Aktiver Port: analog-input-linein
Formate:
pcm

Quelle #5
Status: IDLE
Name: alsa_output.pci-0000_00_1b.0.iec958-stereo.monitor
Beschreibung: Monitor of Eingebautes Tongerät Digital Stereo (IEC958)
Treiber: module-alsa-card.c
Abtastwert-Angabe: s16le 2ch 44100Hz
Kanalzuordnung: front-left,front-right
Besitzer-Modul: 8
Stumm: nein
Lautstärke: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
Verteilung 0,00
Basis-Lautstärke: 65536 / 100% / 0,00 dB
Ziel-Monitor: alsa_output.pci-0000_00_1b.0.iec958-stereo
Latenz: 0 usec, eingestellt 371519 usec
Flags: DECIBEL_VOLUME LATENCY
Eigenschaften:
device.description = "Monitor of Eingebautes Tongerät Digital Stereo (IEC958)"
device.class = "monitor"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xd1c00000 irq 26"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "27d8"
device.product.name = "NM10/ICH7 Family High Definition Audio Controller (GA-D525TUD (Realtek ALC887))"
device.form_factor = "internal"
device.string = "0"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Formate:
pcm

pactl list sinks
Ziel #3
Status: RUNNING
Name: alsa_output.pci-0000_00_1b.0.iec958-stereo
Beschreibung: Eingebautes Tongerät Digital Stereo (IEC958)
Treiber: module-alsa-card.c
Abtastwert-Angabe: s16le 2ch 44100Hz
Kanalzuordnung: front-left,front-right
Besitzer-Modul: 8
Stumm: nein
Lautstärke: front-left: 85193 / 130% / 6,84 dB, front-right: 85193 / 130% / 6,84 dB
Verteilung 0,00
Basis-Lautstärke: 65536 / 100% / 0,00 dB
Quellen-Monitor: alsa_output.pci-0000_00_1b.0.iec958-stereo.monitor
Latenz: 55817 usec, eingestellt 56000 usec
Flags: HARDWARE HW_MUTE_CTRL DECIBEL_VOLUME LATENCY SET_FORMATS
Eigenschaften:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC887 Digital"
alsa.id = "ALC887 Digital"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "1"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xd1c00000 irq 26"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "27d8"
device.product.name = "NM10/ICH7 Family High Definition Audio Controller (GA-D525TUD (Realtek ALC887))"
device.form_factor = "internal"
device.string = "iec958:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
device.access_mode = "mmap+timer"
device.profile.name = "iec958-stereo"
device.profile.description = "Digital Stereo (IEC958)"
device.description = "Eingebautes Tongerät Digital Stereo (IEC958)"
alsa.mixer_name = "Realtek ALC887"
alsa.components = "HDA:10ec0887,10ec0887,00100202"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
iec958-stereo-output: Digitalausgang (S/PDIF) (priority: 0)
Aktiver Port: iec958-stereo-output
Formate:
pcm

Source 3 is supended. I think this coud be the line in, but I am not sure.

Sound output in general works. I just want to get sound from the line in port working.