diff --git a/functions_compat/fxchange.py b/functions_compat/fxchange.py
index 83b2f5a8..5d7978c2 100644
--- a/functions_compat/fxchange.py
+++ b/functions_compat/fxchange.py
@@ -297,10 +297,51 @@ def process(convproj_obj, in_dawinfo, out_dawinfo, out_type):
 		for fxnum in used_fxchans: convproj_obj.track_order.append('fxrack_'+str(fxnum))
 		return True
 
+
+
+
+
+
+
+
+
+	elif in_fxtype == 'route' and out_fxtype == 'groupreturn' and convproj_obj.type in ['r', 'ri']:
+
+		if not convproj_obj.trackroute:
+			for t in convproj_obj.track_order:
+				convproj_obj.fx__route__add(t)
+
+		fx_trackids = {}
+		for trackid, track_obj in convproj_obj.track__iter():
+			s = convproj_obj.trackroute[trackid]
+			if not s.to_master_active and s.data:
+				firstsend = list(s.data)[0]
+				if firstsend not in fx_trackids: fx_trackids[firstsend] = []
+				fx_trackids[firstsend].append(trackid)
+				track_obj.group = 'group_'+firstsend
+
+		for trackid, track_obj in fx_trackids.items():
+			track_obj = convproj_obj.track_data[trackid]
+			group_obj = convproj_obj.fx__group__add('group_'+trackid)
+			group_obj.visual = track_obj.visual.copy()
+			group_obj.plugslots.slots_audio = track_obj.plugslots.slots_audio
+			group_obj.plugslots.slots_mixer = track_obj.plugslots.slots_mixer
+
+		return True
+
+
+
+
+
+
+
+
+
+
+
 	elif in_fxtype == 'route' and out_fxtype == 'rack' and convproj_obj.type in ['r', 'ri']:
 		tracknums = {}
 
-		#track2fxrack(convproj_obj, convproj_obj.track_master, 0, 'Master', '', True, ['master'])
 		if not convproj_obj.trackroute:
 			for t in convproj_obj.track_order:
 				convproj_obj.fx__route__add(t)
diff --git a/objects/convproj/fileref.py b/objects/convproj/fileref.py
index 49d87fe9..8a78ea48 100644
--- a/objects/convproj/fileref.py
+++ b/objects/convproj/fileref.py
@@ -4,6 +4,7 @@
 import os
 import sys
 import getpass
+import glob
 
 from plugins import base as dv_plugins
 from functions import data_values
@@ -88,9 +89,36 @@ def apply(self, fileref_obj, basepaths):
 
 		return False
 
+sampleref__searchmissing_limit = 1000
+
 class filesearcher:
 	basepaths = {}
 	searchparts = {}
+	searchcache = None
+
+	def scan_local_files(dirpath):
+		filesearcher.searchcache = filesearcher.searchcache
+		if filesearcher.searchcache == None:
+			filesearcher.searchcache = {}
+			numfile = 0
+
+			for n, file in enumerate(glob.glob(os.path.join(dirpath, '*'))):
+				fileref_obj = cvpj_fileref()
+				fileref_obj.set_path(None, file, True)
+				filename = str(fileref_obj.file)
+				if filename not in filesearcher.searchcache:
+					filesearcher.searchcache[filename] = fileref_obj
+					numfile += 1
+					if numfile > sampleref__searchmissing_limit: break
+
+			for n, file in enumerate(glob.glob(os.path.join(dirpath, '**', '*'))):
+				fileref_obj = cvpj_fileref()
+				fileref_obj.set_path(None, file, True)
+				filesearcher.searchcache[str(fileref_obj.file)] = fileref_obj
+				if filename not in filesearcher.searchcache:
+					filesearcher.searchcache[filename] = fileref_obj
+					numfile += 1
+					if numfile > sampleref__searchmissing_limit: break
 
 	def add_basepath(searchseries, in_path):
 		pathdata = cvpj_fileref()
@@ -412,7 +440,6 @@ def set_path(self, in_os_type, in_path):
 		self.get_info()
 
 	def find_relative(self, searchseries):
-
 		if not self.found:
 			orgpath = self.fileref.get_path(None, False)
 
@@ -424,10 +451,20 @@ def find_relative(self, searchseries):
 
 			return iffound
 
-
-
 		return False
 
+	def search_local(self, dirpath):
+		filesearcher.scan_local_files(dirpath)
+		files = filesearcher.searchcache
+		filename = str(self.fileref.file)
+
+		if filename in files: 
+			logger_filesearch.debug('    >>| file found: searchmissing >'+self.fileref.get_path(None, False))
+			self.fileref = files[filename]
+			self.get_info()
+		else:
+			logger_filesearch.debug('    ..| file not found: searchmissing > '+str(self.fileref.get_path(None, False)))
+
 	def get_info(self):
 		wav_realpath = self.fileref.get_path(os_path, False)
 
diff --git a/objects/convproj/project.py b/objects/convproj/project.py
index ae5b8fa2..6b80b947 100644
--- a/objects/convproj/project.py
+++ b/objects/convproj/project.py
@@ -71,8 +71,6 @@ def autoloc_getname(autopath):
 
 plugin_id_counter = idcounter.counter(1000, 'plugin_')
 
-sampleref__searchmissing_limit = 1000
-
 def routetrackord(trackord, groupdata, outl, insidegroup):
 	for t, i in trackord:
 		outl.append([t, i, insidegroup])
@@ -468,25 +466,12 @@ def sampleref__get(self, fileid):
 
 	def sampleref__searchmissing(self, input_file):
 		dirpath = os.path.dirname(input_file)
-		files = None
+		files = self.filesearcher.searchcache
 
 		for sampleref_id, sampleref_obj in self.sampleref__iter():
 			if not sampleref_obj.found:
-				if files == None:
-					files = {}
-					for n, file in enumerate(glob.glob(os.path.join(dirpath, '**', '*'))):
-						fileref_obj = fileref.cvpj_fileref()
-						fileref_obj.set_path(None, file, True)
-						files[str(fileref_obj.file)] = fileref_obj
-						if n == sampleref__searchmissing_limit: break
-
-				filename = str(sampleref_obj.fileref.file)
-				if filename in files: 
-					logger_filesearch.debug('    >>| file found: searchmissing >'+sampleref_obj.fileref.get_path(None, False))
-					sampleref_obj.fileref = files[filename]
-					sampleref_obj.get_info()
-				else:
-					logger_filesearch.debug('    ..| file not found: searchmissing > '+str(sampleref_obj.fileref.get_path(None, False)))
+				self.filesearcher.scan_local_files(dirpath)
+				sampleref_obj.search_local()
 
 # --------------------------------------------------------- FX ---------------------------------------------------------
 
diff --git a/objects/convproj/tracks.py b/objects/convproj/tracks.py
index 3616a5d2..c0af8474 100644
--- a/objects/convproj/tracks.py
+++ b/objects/convproj/tracks.py
@@ -85,11 +85,15 @@ def set_synth(self, pluginid):
 		self.synth = pluginid
 
 	def plugin_autoplace(self, plugin_obj, pluginid):
-		if plugin_obj.role == 'fx': self.slots_audio.append(pluginid)
-		elif plugin_obj.role == 'notefx': self.slots_notes.append(pluginid)
-		elif plugin_obj.role == 'synth': 
-			if not self.synth: self.synth = pluginid
-			self.slots_synths.append(pluginid)
+		if plugin_obj is not None:
+			if plugin_obj.role == 'fx': self.slots_audio.append(pluginid)
+			elif plugin_obj.role == 'notefx': self.slots_notes.append(pluginid)
+			elif plugin_obj.role == 'synth': 
+				if not self.synth: self.synth = pluginid
+				self.slots_synths.append(pluginid)
+
+	def copy(self):
+		return copy.deepcopy(self)
 
 	def __iter__(self):
 		for x in self.slots_notes: yield 'notes', x
diff --git a/objects/data_bytes/bytereader.py b/objects/data_bytes/bytereader.py
index d0671e73..0157e180 100644
--- a/objects/data_bytes/bytereader.py
+++ b/objects/data_bytes/bytereader.py
@@ -118,7 +118,7 @@ def load_file(self, filename):
 			self.buf = mmap.mmap(f.fileno(), 0, access = mmap.ACCESS_READ)
 			return True
 		else:
-			print('File Not Found', filename)
+			#print('File Not Found', filename)
 			return False
 
 	def load_raw(self, rawdata):
diff --git a/plugins/input/r_audiosauna.py b/plugins/input/r_audiosauna.py
index d10e6d2e..81e45e3e 100644
--- a/plugins/input/r_audiosauna.py
+++ b/plugins/input/r_audiosauna.py
@@ -33,6 +33,7 @@ def get_priority(self): return 0
 	def get_prop(self, in_dict): 
 		in_dict['file_ext'] = ['song']
 		in_dict['placement_cut'] = True
+		in_dict['placement_loop'] = ['loop', 'loop_off', 'loop_adv', 'loop_adv_off']
 		in_dict['audio_filetypes'] = ['wav', 'mp3']
 		in_dict['plugin_included'] = ['native:audiosauna', 'universal:sampler:multi', 'universal:bitcrush']
 		in_dict['fxtype'] = 'groupreturn'