@@ -127,6 +127,11 @@ The same literal forms keep their own spelling:
 - The device name Home Assistant and Music Assistant show: **Apollo CAST_PRO-1**
 - The setup hotspot: **Apollo CAST_PRO-1 Hotspot**
 
+Call the CAST PRO-1's audio input jack **Analog In (Line In)** in titles,
+nav labels, headings, and its first mention on a page, then **Analog In**.
+Readers know it by either name. The firmware setting keeps its own label,
+**Line In Streaming**.
+
 ### First mention per page
 
 On the first mention of a product in body copy, use the full brand name:
 
@@ -1,14 +1,15 @@
 ---
-title: Play a source through CAST PRO-1 Analog In
-description: Connect a turntable, TV, or other audio source to the CAST PRO-1 Analog In jack and play it through Music Assistant as a Sendspin Source.
+title: Play a source through CAST PRO-1 Analog In (Line In)
+description: Connect a turntable, TV, or other audio source to the CAST PRO-1 Analog In (Line In) jack and play it on any speaker through Music Assistant as a Sendspin Source.
 ---
-# Play a source through Analog In
+# Play a source through Analog In (Line In)
 
-The **Analog In** jack on your CAST PRO-1 turns any line-level source into something Music Assistant can play. Plug in a turntable, TV, or CD player, and it shows up in Music Assistant as a **Sendspin Source**. Play it on the speakers connected to your CAST PRO-1, or on any other Music Assistant player in your home.
+The **Analog In (Line In)** jack on your CAST PRO-1 turns any line-level source into something Music Assistant can play. Plug in a turntable, TV, or CD player, and it shows up in Music Assistant as a **Sendspin Source**. Play it on the speakers connected to your CAST PRO-1, or on any other Music Assistant player in your home.
 
 !!! note "Before you start"
 
-    Finish the [Getting Started guide](../setup/getting-started.md) first, so your CAST PRO-1 is in Home Assistant and Music Assistant is running.
+    - Finish the [Getting Started guide](../setup/getting-started.md) first, so your CAST PRO-1 is in Home Assistant and Music Assistant is running.
+    - Your CAST PRO-1 needs firmware 26.11.3.2 or newer, and Music Assistant 2.10.7 or newer.
 
 ## What you'll need
 
@@ -21,28 +22,67 @@ The **Analog In** jack on your CAST PRO-1 turns any line-level source into somet
 
 ![Plugging a USB-C power cable into the CAST PRO-1, then a 3.5mm cable into the Analog In jack](/assets/cast-pro-1-plug-in-audio-in.webp)
 
+## Turn on the audio input
+
+Do this once, so Music Assistant can use your CAST PRO-1's Analog In.
+
+1\. In Music Assistant, go to **Settings → Players** and open your CAST PRO-1.
+
+2\. Select **Turn on audio input**.
+
+If your CAST PRO-1 shows **Setup required** instead, finish its setup and choose **Connect unpaired with audio input** (or **Pair device**).
+
 ## Play it in Music Assistant
 
-1\. Open **Music Assistant** from the Home Assistant sidebar and select **Browse**.
+!!! warning "Your CAST PRO-1 plays through Optical while its Analog In streams"
 
-2\. Select **Sendspin Source (Apollo CAST_PRO-1 xxxxxx)**, where `xxxxxx` matches the end of your device's name. (1)
+    While its Analog In streams, your CAST PRO-1 plays through its optical output, even with **Audio Output** set to **Analog**. That's because Analog In and the analog output share one audio connection inside the device. It goes back to Analog when the stream stops, and this applies to anything else it plays in the meantime.
+
+    Speakers on the analog output? Play the source on another player, or connect this CAST PRO-1 to your receiver or soundbar with an optical cable.
+
+1\. Open **Music Assistant** from the Home Assistant sidebar and select the player to hear it on: your CAST PRO-1, or any other player in another room.
+
+2\. Select **Browse**, then **Sendspin Source (Apollo CAST_PRO-1 xxxxxx)**, where `xxxxxx` matches the end of your device's name. If you have more than one CAST PRO-1, open **Sendspin Source** first and pick yours there. (1)
 { .annotate }
 
-1.  Your device's name is at the top of its device page in Home Assistant, for example **Apollo CAST_PRO-1 04c6d0**.
+1.  Your device's name is at the top of its device page in Home Assistant, for example **Apollo CAST_PRO-1 04c6d0**. If you renamed the player in Music Assistant, the source uses that name instead.
 
-3\. Pick the player to hear it on. Choose your CAST PRO-1 to play the source through its own speakers, or any other player to hear it in another room.
+3\. Select **Play**.
 
 <!-- TODO image: /assets/cast-pro-1-sendspin-source.webp | alt: Music Assistant Browse page showing the Sendspin Source for the CAST PRO-1 -->
 
+Your source now plays until you stop it in Music Assistant. It plays on one player at a time, so picking it on another player moves it there. The jack can't tell when your source starts or stops, so start and stop it from Music Assistant each time. On your CAST PRO-1's own player, it's also in the **Select source** menu.
+
+!!! tip "See a Line In switch?"
+
+    Firmware 26.11.3.2 has a **Line In** switch on the device page. You don't need it, so leave it off. Firmware 26.11.3.3 removes it.
+
 ## Choose the streaming quality
 
-The **Line In Streaming** setting on your CAST PRO-1's device page sets how it sends your source over the network:
+The **Line In Streaming** setting, under **Configuration** on your CAST PRO-1's device page, sets how it sends your source over the network:
 
 | Option | When to use it |
 | --- | --- |
-| **Compressed** | The default. Best for a weaker Wi-Fi connection, since it uses less bandwidth. |
-| **Lossless** | Full quality. Pick it when your CAST PRO-1 is on Ethernet or a strong Wi-Fi signal. |
+| **Compressed (best for WiFi)** | The default. Uses about 128 kbps, so audio stays smooth on a weaker Wi-Fi connection. |
+| **Lossless (Ethernet or strong WiFi)** | Full quality, about 1.5 Mbps. Pick it when your CAST PRO-1 is on Ethernet or a strong Wi-Fi signal. |
+
+Changing it restarts your CAST PRO-1, which stops anything playing on it.
 
 [![Open your Home Assistant instance and show an integration.](https://my.home-assistant.io/badges/integration.svg)](https://my.home-assistant.io/redirect/integration/?domain=esphome)
 
+## Troubleshooting
+
+**The Sendspin Source isn't in Music Assistant**
+
+- Check your CAST PRO-1 is on firmware 26.11.3.2 or newer, and Music Assistant on 2.10.7 or newer.
+- Turn on the audio input. See [Turn on the audio input](#turn-on-the-audio-input).
+
+**No sound from the speakers on your CAST PRO-1**
+
+- While its Analog In streams, the CAST PRO-1 only plays through its optical output. See [Play it in Music Assistant](#play-it-in-music-assistant).
+
+**Choppy audio**
+
+- Set **Line In Streaming** to **Compressed (best for WiFi)**, or connect an Ethernet cable.
+
 [Join our Discord if you need more help! :simple-discord:](https://link.apolloautomation.com/discord){ .md-button }
@@ -8,7 +8,7 @@ Your CAST PRO-1 has LED strip terminals, **5V**, **GND** and **IO1**, for an add
 
 !!! note "Update your firmware first"
 
-    If you don't see any **LED Strip** entities on your CAST PRO-1's device page, update it from the **Firmware Update** entity first.
+    LED strip support needs firmware 26.11.3.2 or newer. If you don't see any **LED Strip** entities on your CAST PRO-1's device page, update it from the **Firmware Update** entity first.
 
 ## What you'll need
 
@@ -34,7 +34,7 @@ You'll connect the strip's power, ground and data wires to the matching terminal
 
 1\. Unplug your CAST PRO-1 from power.
 
-2\. Find the input end of the strip. Its pads are labelled **DIN** or **DI**, and the arrows printed on the strip point away from it. (1)
+2\. Find the input end of the strip. Its pads are labeled **DIN** or **DI**, and the arrows printed on the strip point away from it. (1)
 { .annotate }
 
 1.  Data only travels one way along the strip. Wired to the **DOUT** end, the strip stays dark.
@@ -53,7 +53,7 @@ You'll connect the strip's power, ground and data wires to the matching terminal
 
 The LED strip controls are hidden until you turn them on, so a CAST PRO-1 without a strip doesn't show extra controls.
 
-1\. In Home Assistant, go to **Settings** > **Devices & services** > **ESPHome** and open your CAST PRO-1.
+1\. In Home Assistant, go to **Settings → Devices & services → ESPHome** and open your CAST PRO-1.
 
 [![Open your Home Assistant instance and show an integration.](https://my.home-assistant.io/badges/integration.svg)](https://my.home-assistant.io/redirect/integration/?domain=esphome)
 
@@ -79,7 +79,7 @@ If the colors come out in the wrong order (for example, green when the test show
 | **LED Strip Chipset** | The type of LED on your strip. Leave it on **WS2812** unless the strip flickers or shows random colors. |
 | **LED Strip Effect A Pattern** and **LED Strip Effect A Speed** | The pattern **Effect A** runs, and how fast. |
 | **LED Strip Effect B Pattern** and **LED Strip Effect B Speed** | The pattern **Effect B** runs, and how fast. |
-| **LED Strip Music Mode** | Turns the strip on with the **Music Effect** whenever music is playing, and off about 3 seconds after it stops. |
+| **LED Strip Music Mode** | Turns the strip on with the **Music Effect** whenever music or the [Analog In (Line In)](../additional-info/analog-in.md) source is playing, and off about 3 seconds after it stops. |
 | **LED Strip Music Effect** | The effect Music Mode uses. |
 | **LED Strip Test** | Runs the color test from the steps above. Under **Diagnostic**. |
 
 
@@ -41,13 +41,24 @@ data:
 
 ## What happens during an announcement
 
-The CAST PRO-1 ducks the music by 40 dB the instant an announcement starts, so speech stays clear without the music stopping. The onboard LEDs turn cyan while it's talking. When the message finishes, the music fades back over a second and the LEDs go out.
+The CAST PRO-1 ducks the music the instant an announcement starts, so speech stays clear without the music stopping. The onboard LEDs turn cyan while it's talking. When the message finishes, the music fades back over a second and the LEDs go out.
+
+Two settings under **Configuration** on the device page change this:
+
+| Setting | What it does |
+| --- | --- |
+| **Announcement Ducking** | How far the music drops, from -80 dB to 0 dB. Defaults to -40 dB. Set it to 0 to keep the music at full volume. |
+| **Announcement LED Brightness** | How bright the cyan LEDs glow, from 0% to 100%. Defaults to 100%. Set it to 0% to keep them off. |
+
+!!! note "Firmware 26.11.3.3 or newer"
+
+    These settings arrived in firmware 26.11.3.3. Older firmware ducks the music by 40 dB and lights the LEDs at 50%. Until 26.11.3.3 reaches the Stable channel, [switch to the Beta channel](../../general/setup/switch-to-beta-branch.md) to get them.
 
 That LED change is a handy way to tell an announcement from a glitch when you're across the room.
 
 ## Announce a sound instead of speech
 
-Anything you can play can be an announcement, not just speech. A doorbell chime works the same way, ducking the music and lighting the LEDs:
+Anything you can play can be an announcement, not only speech. A doorbell chime works the same way, ducking the music and lighting the LEDs:
 
 ```yaml
 action: media_player.play_media
 
@@ -10,12 +10,12 @@ description: Frequently asked questions about the CAST PRO-1 audio caster.
 
 * **Built-in Ethernet:** no addon module needed for a wired connection.
 * **Optical output:** the output jack takes an optical cable as well as a regular 3.5mm audio cable.
-* **Analog In:** a second jack for audio in, so you can play a turntable or TV through Music Assistant.
+* **Analog In (Line In):** a second jack for audio in, so you can play a turntable or TV through Music Assistant.
 * **LED strip terminals:** screw terminals for an addressable LED strip, no soldering.
 
 3\. **Which jack is which?**
 
-* The left jack is **Analog In**, audio in only. Whatever you plug in shows up in Music Assistant as a **Sendspin Source**. See [Play a source through Analog In](additional-info/analog-in.md).
+* The left jack is **Analog In (Line In)**, audio in only. Whatever you plug in shows up in Music Assistant as a **Sendspin Source**. See [Play a source through Analog In (Line In)](additional-info/analog-in.md).
 * The right jack is **Analog/Optical Out**, audio out only. It takes a 3.5mm audio cable for analog or a mini-TOSLINK optical cable for digital.
 * The [Getting Started guide](setup/getting-started.md#know-your-ports) has a labeled photo of every port.
 
@@ -57,6 +57,7 @@ description: Frequently asked questions about the CAST PRO-1 audio caster.
 11\. **Can I play the same music in several rooms?**
 
 * Yes. Group your CAST PRO-1 with other CAST PRO-1s and CAST-1s in Music Assistant and they play in sync. Volume can be set for the whole group or per player.
+* One room a little behind the others, for example through a soundbar? Raise that CAST PRO-1's **Static playback delay (ms)** in Music Assistant. See [Play in multiple rooms](setup/getting-started.md#play-in-multiple-rooms).
 
 12\. **Does it need a cloud account or subscription?**
 
 
@@ -10,7 +10,7 @@ description: Documentation for CAST PRO-1, including setup, usage, and best prac
 
 **Analog or Optical Output:** The **Analog/Optical Out** jack takes a 3.5mm audio cable for powered speakers, or a mini-TOSLINK optical cable for a receiver or soundbar. Pick which one plays with the **Audio Output** setting on the device page.
 
-**Audio In:** Plug a turntable, TV or other source into the **Analog In** jack and it shows up in Music Assistant as a source you can play on any player in your home. See [Play a source through Analog In](additional-info/analog-in.md).
+**Audio In:** Plug a turntable, TV or other source into the **Analog In (Line In)** jack and it shows up in Music Assistant as a source you can play on any player in your home. See [Play a source through Analog In (Line In)](additional-info/analog-in.md).
 
 **Built-In Ethernet:** The CAST PRO-1 has an Ethernet port on board, so it can run on a wired connection with no addon. Without a cable, it works over Wi-Fi.