iPatch.sh

#!/bin/bash

IPATH="/Applications/iTunes.app/Contents/MacOS"

if [ ! -e "$IPATH/iTunesX" ]
then
        sudo mv "$IPATH/iTunes" "$IPATH/iTunesX"

        # has sudo failed?
        if (( $? ))
        then
                exit
        fi  

        sudo cat > "$IPATH/iTunes" <<-'EOF'
                #!/bin/bash

                PROCESS=$(ps aux | egrep "VLC|Ecoute" | egrep -v "egrep|Ecoute Helper")

                if [ -z "$PROCESS" ]
                then
                        "/Applications/iTunes.app/Contents/MacOS/iTunesX" &
                        disown %1
                fi
        EOF

        sudo chmod uog+x "$IPATH/iTunes"
else
        echo "Already patched."
fi

I modified it to also check if VLC is running.