diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..f744573
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1 @@
+custom: https://gumroad.com/l/hGYGh
diff --git a/samplicity/samplicity.py b/samplicity/samplicity.py
index 9f941d4..3337ae3 100644
--- a/samplicity/samplicity.py
+++ b/samplicity/samplicity.py
@@ -16,10 +16,10 @@
 import math
 import shutil
 import numpy as np
+from random import random
 from scikits.audiolab import Sndfile, play
 
 from common import wrap, pad_name, path_insensitive
-
 VERSION = 'Samplicity v' + __version__
 
 OPTIONS = {}
@@ -66,8 +66,8 @@ def read_wav(self, sample_path):
         channels = sample.channels
         encoding = sample.encoding
         frames_count = sample.nframes
-
         frames = sample.read_frames(frames_count, dtype=np.float32)
+        
         sample.close()
         del sample
 
@@ -221,10 +221,12 @@ def __init__(self, file):
         for i, region in enumerate(self.regions):
             if self.is_region_used(i):
                 region.load_audio()
-                region['delta_sample'] = tempdir + str(time.clock()) + '.dat'
+                region['delta_sample'] = tempdir + str(random()) + '.dat'
                 region['sample_length'] = len(region['sample_data']) * region['channels']
                 region['sample_data'].T.flatten().tofile(region['delta_sample'], format='f')
+                
                 region['sample_data'] = ''
+                
                 del region['sample_data']
                 used_regions.append(region)
             else:
@@ -357,7 +359,11 @@ def write_regions_meta(self):
         for region in self.regions:
             self.output_file.write(struct.pack(
                 'i', region['sample_bittype'] * region['sample_length']))  # sample length
-            self.output_file.write(struct.pack('2i', 0, 0))  # sample loop start and end
+            loopstart = region['sample_bittype'] * int(region['loop_start']) if 'loop_start' in region else 0
+            loopend   = region['sample_bittype'] * int(region['loop_end'])   if 'loop_end'   in region else 0
+            loopend  -= loopstart # loop-length
+            
+            self.output_file.write(struct.pack('2i', loopstart*2, loopend*2))  # sample loop start and end
             # volume
             volume = 255
             if 'volume' in region:
@@ -368,6 +374,8 @@ def write_regions_meta(self):
             self.output_file.write(struct.pack('B', volume))
 
             self.output_file.write(struct.pack('b', int(region['tune'])))  # finetune (signed!)
+            if loopstart:
+                region['sample_type'] = 0b1100101
             self.output_file.write(struct.pack('b', region['sample_type']))  # sample type
 
             #panning (unsigned!)