A Bash script for decrypting all Vice City radio stations from ADF to MP3. You can pass the game's path in an argument, by default uses the Steam installation.

adf2mp3.sh

#!/bin/bash

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if [ "$(command -v xcat)" ]; then
    XCAT="xcat"
elif [ -f "xcat" ]; then
    XCAT="./xcat"
else
    if [ ! -f "xcat.py" ]; then
        echo "xcat not found, downloading..." && curl -OL https://raw.githubusercontent.com/mstrand/xcat/master/xcat.py
    fi

    XCAT="python3 xcat.py"
fi

if [ -n "$1" ]; then
    DIRECTORY="$1"
else
    DIRECTORY="$HOME/.steam/steam/steamapps/common/Grand Theft Auto Vice City"
fi

echo "Using files from directory: $DIRECTORY"

SOURCE="adf"
DESTINATION="mp3"

rm -rf $SOURCE $DESTINATION
mkdir $SOURCE $DESTINATION

cp -r "$DIRECTORY/Audio"/*.adf "$SOURCE" || exit 1

for station in "$SOURCE"/*.adf; do
    INPUT="$station"
    OUTPUT="$DESTINATION/$(basename $station '.adf').mp3"

    echo "$INPUT -> $OUTPUT"

    $XCAT -n 0x22 "$INPUT" > "$OUTPUT" || exit 1
done