working script

start.bat

@@ -1,7 +1,22 @@
 @echo off
-echo "Starting Lavalink server..."
-cd lavalink
-RUN "java -Djdk.tls.client.protocols=TLSv1.3 -Xmx3G -jar Lavalink.jar 1>/dev/null &" # showing only stderror
-echo "Starting Discord bot..."
+cd src\lavalink
+if exist Lavalink.jar (
+    echo "Lavalink found."
+) else (
+    echo "Downloading Lavalink..."
+    call download.bat
+)
+
+tasklist /fi "ImageName eq Lavalink.jar" /fo csv 2> NUL | find /I "Lavalink.jar" > NUL
+if "%ERRORLEVEL%" == "0" (
+    echo "Lavaling already started."
+) else (
+    echo "Starting Lavalink server..."
+    start java -Djdk.tls.client.protocols=TLSv1.3 -Xmx3G -jar Lavalink.jar 1> NUL & REM showing only stderror
+)
 cd ..
-RUN "python -u ./main.py"
+echo "Starting Discord bot..."
+python -u ./main.py
+
+:: if you want to kill the java process, do this command:
+:: pkill -9 -f Lavalink.jar