diff --git a/index.php b/index.php
index 6e9740d..bfd6e07 100644
--- a/index.php
+++ b/index.php
@@ -1,3 +1,20 @@
 <?php
+// imagine Bob. Bob has a slow computer
+// but he likes osu! very much. his HDD
+// is nearly failing, but the script will
+// optimize his experience eventually.
+// trust me, 83 hours is still not enough
+// for the likes of Bob.
+set_time_limit(298800);
+
+// around 13 000 maps, the new parser
+// exhausted the default 512MB limit,
+// this might need to be adjusted in
+// the future
+ini_set('memory_limit', '1024M');
+
+// git does not like empty folders
 if (!file_exists("session")) mkdir("session");
+
+// the entry point
 require "main.php";
\ No newline at end of file
diff --git a/libraries/osu_library.php b/libraries/osu_library.php
index e610ae1..01b7f72 100644
--- a/libraries/osu_library.php
+++ b/libraries/osu_library.php
@@ -16,8 +16,14 @@ class osu_library
 		$this->load_db($db_file);
 	}
 	
+	public function get_scan_time() : float
+	{
+		return floatval($this->db["scanning_time"] ?? 0);
+	}
+	
 	public function scan_library(string $root) : void
 	{
+		$time_start = microtime(true); // measure scanning time
 		$root = str_ireplace("\\", "/", $root); // fuck windows backslash
 		$root = rtrim($root, "/"); // remove trailing slash(es)
 		
@@ -31,6 +37,10 @@ class osu_library
 		{
 			$this->scan_add_folder($folder);
 		}
+		
+		$time_end = microtime(true);
+		$scanning_time = $time_end - $time_start;
+		$this->db["scanning_time"] = $scanning_time;
 	}
 	
 	public function rescan_library(string $root) : void
@@ -60,15 +70,31 @@ class osu_library
 		
 		foreach ($glob as $file)
 		{
+			$difficulty_key = basename($file);
 			$difficulty = $parser->parse_osu_file_format($file);
-			$difficulty["key"] = basename($file);
+			$difficulty["key"] = $difficulty_key;
 			$difficulty["path"] = $file;
 			
-			$difficulties[basename($file)] = $difficulty;
+			$difficulties[$difficulty_key] = $difficulty;
 		}
 		
-		$temp = explode(" ", basename($folder))[0];
-		$set_id = is_numeric($temp) ? $temp : "";
+		// look for a beatmapset id
+		$set_id = false;
+		foreach ($difficulties as $difficulty)
+		{
+			if (!empty($difficulty[0]["Metadata"]["BeatmapSetID"]))
+			{
+				$id = intval($difficulty[0]["Metadata"]["BeatmapSetID"]);
+			}
+		}
+		
+		if ($set_id === false)
+		{
+			$temp = explode(" ", basename($folder))[0];
+			$set_id = is_numeric($temp) ? $temp : "";
+		}
+		
+		if ($set_id < 1) $set_id = false; // some are 0, some are -1, allowing positive only
 		
 		$entry = array(
 			"key" => $key,
@@ -148,7 +174,12 @@ class osu_library
 	
 	public function get_full_library() : array
 	{
-		return $this->db["library"];
+		return $this->db["library"] ?? array();
+	}
+	
+	public function is_loaded() : bool
+	{
+		return !empty($this->get_full_library()); // not empty == loaded
 	}
 	
 	public function get_folders() : array
diff --git a/main.php b/main.php
index 20b4ed0..f79559f 100644
--- a/main.php
+++ b/main.php
@@ -1,9 +1,9 @@
 <?php
 // todo: whitelist / blacklist
 // todo: repack osz file
-set_time_limit(300000);
-ini_set('memory_limit', '1024M');
 
+
+// imports
 require_once "libraries/osu_library.php";
 require_once "libraries/optimizer.php";
 require_once "libraries/utils.php";
@@ -11,7 +11,12 @@ require_once "temp/dump.php";
 
 $lib = new osu_library();
 
-$root = "S:/test";
+$display = "start";
+
+if ($lib->is_loaded())
+{
+	$display = "main";
+}
 
 function redirect($path)
 {
@@ -21,7 +26,7 @@ function redirect($path)
 
 if (isset($_GET["rescan"]))
 {
-	$lib->scan_library($root);
+	$lib->scan_library(json_decode(file_get_contents("session/settings.json"), true)["osu_folder"]);
 	$lib->save_db();
 	redirect("./");
 }
@@ -72,6 +77,7 @@ foreach ($lib->get_library() as $set)
 	}
 }
 echo "<h3>Parse time: " . $proc_time . " seconds</h3>";
+echo "<h3>Scan time: " . $lib->get_scan_time() . " seconds</h3>";
 // foreach ($lib->get_library() as $mapset)
 // {
 	// echo '<div class="beatmapset">';
diff --git a/splitter.php b/splitter.php
index 8203d8e..3d7720c 100644
--- a/splitter.php
+++ b/splitter.php
@@ -42,7 +42,7 @@ foreach ($library as $key => $set)
 	$tiempo = 0;
 	foreach ($set["difficulties"] as $map)
 	{
-		$tiempo += $map["process_time"];
+		$tiempo += $map["parse_time"];
 	}
 	$proc_times[$key] = $tiempo;
 }
@@ -53,6 +53,6 @@ foreach ($proc_times as $key => $tiempo)
 {
 	$value = $library[$key];
 	$firstdiff = $value["difficulties"][array_key_first($value["difficulties"])];
-	echo str_pad(round($tiempo, 5), 7, "0") . "s " . $value["id"] . ": " . $firstdiff["artist"] . " - " . $firstdiff["title"] . " (" . count($value["difficulties"]) . " difficulties)\n";
+	echo str_pad(round($tiempo, 5), 7, "0") . "s " . $value["id"] . ": " . $firstdiff["Metadata"]["Artist"] . " - " . $firstdiff["Metadata"]["Title"] . " (" . count($value["difficulties"]) . " difficulties)\n";
 }
 echo "</pre>";
\ No newline at end of file