diff --git a/raspberry/picoreplayer.sh b/raspberry/picoreplayer.sh
index 7d8baac..85523f8 100755
--- a/raspberry/picoreplayer.sh
+++ b/raspberry/picoreplayer.sh
@@ -1,6 +1,12 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+# Must be run as root
+if [[ $EUID -ne 0 ]]; then
+  echo "This script must be run as root. Try sudo $0 ..." >&2
+  exit 1
+fi
+
 # Default env file
 ENV_FILE="./.env"
 
@@ -14,12 +20,10 @@ DOWNLOAD_URL="${BASE_URL}/${IMG_ZIP}"
 usage() {
   cat <<EOF
 Usage: sudo $0 --device <rpi-4|rpi-zero|rpi-zero-2> \
-              --name <hostname> \
               --sdcard </dev/sdX> \
               [--env-file /path/to/.env]
 
   --device     Target board (rpi-4, rpi-zero, rpi-zero-2)
-  --name       Hostname for the Pi
   --sdcard     Device node of the SD card (e.g. /dev/sdb)
   --env-file   File containing WIFI_SSID and WIFI_PSK (defaults to ./.env)
 EOF
@@ -27,20 +31,19 @@ EOF
 }
 
 # Parse args
-DEVICE="" NAME="" SDCARD=""
+DEVICE="" SDCARD=""
 while [[ $# -gt 0 ]]; do
   case "$1" in
-    --device)  DEVICE="$2"; shift 2;;
-    --name)    NAME="$2";   shift 2;;
-    --sdcard)  SDCARD="$2"; shift 2;;
+    --device)   DEVICE="$2";   shift 2;;
+    --sdcard)   SDCARD="$2";   shift 2;;
     --env-file) ENV_FILE="$2"; shift 2;;
-    -h|--help) usage;;
-    *) echo "Unknown option: $1"; usage;;
+    -h|--help)  usage;;
+    *) echo "Unknown option: $1" >&2; usage;;
   esac
 done
 
 # Validate
-if [[ -z "$DEVICE" || -z "$NAME" || -z "$SDCARD" ]]; then
+if [[ -z "$DEVICE" || -z "$SDCARD" ]]; then
   usage
 fi
 if [[ ! -b "$SDCARD" ]]; then
@@ -53,7 +56,6 @@ if [[ ! -f "$ENV_FILE" ]]; then
 fi
 
 # Load Wi-Fi credentials
-# Expect lines: WIFI_SSID=... and WIFI_PSK=...
 source "$ENV_FILE"
 if [[ -z "${WIFI_SSID:-}" || -z "${WIFI_PSK:-}" ]]; then
   echo "Error: WIFI_SSID and WIFI_PSK must be set in $ENV_FILE" >&2
@@ -67,18 +69,16 @@ if [[ ! -f "$IMG_ZIP" ]]; then
 fi
 
 # Flash image
-echo "Flashing $IMG_ZIP to $SDCARD (this will overwrite everything!)"
+echo "Flashing $IMG_ZIP to $SDCARD (will overwrite everything!)"
 sync
-xzcat $IMG_ZIP | dd of="$SDCARD" bs=4M status=progress conv=fsync
+xzcat "$IMG_ZIP" | dd of="$SDCARD" bs=4M status=progress conv=fsync
 sync
 
 # Determine partition suffixes (/dev/sdX1 vs /dev/mmcblk0p1)
 if [[ "$SDCARD" =~ [0-9]$ ]]; then
-  PART1="${SDCARD}p1"
-  PART2="${SDCARD}p2"
+  PART1="${SDCARD}p1"; PART2="${SDCARD}p2"
 else
-  PART1="${SDCARD}1"
-  PART2="${SDCARD}2"
+  PART1="${SDCARD}1";  PART2="${SDCARD}2"
 fi
 
 # Mount partitions
@@ -87,7 +87,7 @@ ROOT_MNT=$(mktemp -d)
 mount "$PART1" "$BOOT_MNT"
 mount "$PART2" "$ROOT_MNT"
 
-# Create hidden Wi-Fi config on boot partition (picoreplayer picks this up)
+# Create hidden Wi-Fi config on boot partition
 cat > "$BOOT_MNT/wpa_supplicant.conf" <<EOF
 ctrl_interface=/var/run/wpa_supplicant
 ctrl_interface_group=staff
@@ -103,13 +103,22 @@ network={
 }
 EOF
 
-# Set hostname
-echo "$NAME" > "$ROOT_MNT/etc/hostname"
-# Update /etc/hosts
-sed -i "s/127\.0\.1\.1.*/127.0.1.1\t$NAME/" "$ROOT_MNT/etc/hosts"
+# If a Zero device, enable Hifiberry DAC+ and disable onboard audio
+if [[ "$DEVICE" == "rpi-zero" || "$DEVICE" == "rpi-zero-2" ]]; then
+  cat >> "$BOOT_MNT/config.txt" <<EOF
 
-# Clean up
+# Hifiberry DAC+ overlay for Zero models
+dtoverlay=hifiberry-dacplus-std
+# turn off onboard audio
+dtparam=audio=off
+EOF
+fi
+
+# Cleanup
 umount "$BOOT_MNT" "$ROOT_MNT"
 rmdir "$BOOT_MNT" "$ROOT_MNT"
 
-echo "Done! SD card is ready with PiCorePlayer on $DEVICE, hostname '$NAME', hidden Wi-Fi '$WIFI_SSID'."
+echo "Done! SD card is ready with PiCorePlayer ${PCP_VERSION} on $DEVICE,"
+echo "hidden Wi-Fi '$WIFI_SSID'."
+echo "Insert the SD card into the Pi and power it on."
+echo "You can now connect to the PiCorePlayer web interface at http://pcp.local"