diff --git a/gui/config.json b/gui/config.json
deleted file mode 100644
index 30f023e4..00000000
--- a/gui/config.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-    "tnc_host" : "127.0.0.1",
-    "tnc_port" : "3000",
-    "daemon_host" : "127.0.0.1",
-    "daemon_port" : "3001",
-    "mycall" : "AA0AA",
-    "mygrid" : "AA11ea"    
-}
\ No newline at end of file
diff --git a/gui/main.js b/gui/main.js
index cd7279a1..07293d53 100644
--- a/gui/main.js
+++ b/gui/main.js
@@ -175,9 +175,17 @@ app.whenReady().then(() => {
     console.log("Trying to start daemon binary")
     
 
+    var folder = path.join(__dirname);
+    fs.readdir(folder, (err, files) => {
+        files.forEach(file => {
+            console.log(file);
+        });
+    });
+
+
     if(os.platform()=='linux'){
 
-        daemonProcess = exec('./tnc/daemon', [])
+        daemonProcess = exec(path.join(__dirname) + '/tnc/daemon', [])
         
         daemonProcess.on('error', (err) => {
           console.log(err);
@@ -192,7 +200,7 @@ app.whenReady().then(() => {
     
     if(os.platform()=='win32' || os.platform()=='win64'){
 
-        daemonProcess = exec('tnc\\daemon.exe', [])
+        daemonProcess = exec(path.join(__dirname) + '\\tnc\\daemon.exe', [])
         
         daemonProcess.on('error', (err) => {
           console.log(err);
diff --git a/tnc/audio.py b/tnc/audio.py
index 2b900a8e..b2dedc32 100644
--- a/tnc/audio.py
+++ b/tnc/audio.py
@@ -2,20 +2,17 @@
 import json
 import sys
 import multiprocessing
+
 ####################################################
 # https://stackoverflow.com/questions/7088672/pyaudio-working-but-spits-out-error-messages-each-time
 # https://github.com/DJ2LS/FreeDATA/issues/22
 # we need to have a look at this if we want to run this on Windows and MacOS !
 # Currently it seems, this is a Linux-only problem
-
 from ctypes import *
 from contextlib import contextmanager
 import pyaudio
 
 
-
-
-
 ERROR_HANDLER_FUNC = CFUNCTYPE(None, c_char_p, c_int, c_char_p, c_int, c_char_p)
 
 def py_error_handler(filename, line, function, err, fmt):
@@ -35,14 +32,19 @@ def noalsaerr():
 #####################################################
 
 def get_audio_devices():
+    # we need to run this on windows for multiprocessing support
+    # multiprocessing.freeze_support()
+    #multiprocessing.get_context('spawn')
 
-    proxy_input_devices = multiprocessing.Manager().list()
-    proxy_output_devices = multiprocessing.Manager().list()
-    p = multiprocessing.Process(target=fetch_audio_devices, args=(proxy_input_devices, proxy_output_devices))
-    p.start()
-    p.join()
+    with multiprocessing.Manager() as manager:
+        proxy_input_devices = manager.list()
+        proxy_output_devices = manager.list()
+        #print(multiprocessing.get_start_method())
+        p = multiprocessing.Process(target=fetch_audio_devices, args=(proxy_input_devices, proxy_output_devices))
+        p.start()
+        p.join()
 
-    return list(proxy_input_devices), list(proxy_output_devices)   
+        return list(proxy_input_devices), list(proxy_output_devices)   
 
 def fetch_audio_devices(input_devices, output_devices):
     # UPDATE LIST OF AUDIO DEVICES    
@@ -59,7 +61,7 @@ def fetch_audio_devices(input_devices, output_devices):
     #output_devices = []
     
     for i in range(0, p.get_device_count()):
-        # we need to do a try exception, beacuse for windows theres now audio device range
+        # we need to do a try exception, beacuse for windows theres no audio device range
         try:
             maxInputChannels = p.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')
             maxOutputChannels = p.get_device_info_by_host_api_device_index(0, i).get('maxOutputChannels')
@@ -75,9 +77,3 @@ def fetch_audio_devices(input_devices, output_devices):
             output_devices.append({"id": i, "name": str(name)})
     
     p.terminate()
-    #proxy_input_devices = input_devices
-    #proxy_output_devices = output_devices
-    #d = [input_devices, output_devices]
-
-
-
diff --git a/tnc/codec2.py b/tnc/codec2.py
index fabffe9b..76e2a518 100644
--- a/tnc/codec2.py
+++ b/tnc/codec2.py
@@ -38,7 +38,6 @@ sys.path.append(app_path)
 structlog.get_logger("structlog").info("[C2 ] Searching for libcodec2...")
 if sys.platform == 'linux':
     files = glob.glob('**/*libcodec2*',recursive=True)
-    files.append('libcodec2.so')
 
 elif sys.platform == 'darwin':
     files = glob.glob('**/*libcodec2*.dylib',recursive=True)
@@ -68,6 +67,9 @@ if not 'api' in locals():
     
 # ctypes function init        
 
+#api.freedv_set_fmin_fmax.restype = c_int
+#api.freedv_set_fmin_fmax.argype = [c_void_p, c_float, c_float]
+
 api.freedv_open.argype = [c_int]
 api.freedv_open.restype = c_void_p
 
diff --git a/tnc/data_handler.py b/tnc/data_handler.py
index e372aca3..3f3d0574 100644
--- a/tnc/data_handler.py
+++ b/tnc/data_handler.py
@@ -1122,8 +1122,8 @@ class DATA():
 
     def received_beacon(self, data_in:bytes):
     # here we add the received station to the heard stations buffer
-        dxcallsign = bytes(data_in[2:8]).rstrip(b'\x00')
-        dxgrid = bytes(data_in[8:14]).rstrip(b'\x00')
+        dxcallsign = bytes(data_in[1:7]).rstrip(b'\x00')
+        dxgrid = bytes(data_in[7:13]).rstrip(b'\x00')
         static.INFO.append("BEACON;RECEIVING")
         structlog.get_logger("structlog").info("[TNC] BEACON RCVD [" + str(dxcallsign, 'utf-8') + "]["+ str(dxgrid, 'utf-8') +"] ", snr=static.SNR)
         helpers.add_to_heard_stations(dxcallsign,dxgrid, 'BEACON', static.SNR, static.FREQ_OFFSET, static.HAMLIB_FREQUENCY)
diff --git a/tnc/lib/codec2/win64/libgcc_s_seh-1.dll b/tnc/lib/codec2/win64/libgcc_s_seh-1.dll
deleted file mode 100644
index 224cd0b4..00000000
Binary files a/tnc/lib/codec2/win64/libgcc_s_seh-1.dll and /dev/null differ
diff --git a/tnc/lib/codec2/win64/libgcc_s_sjlj-1.dll b/tnc/lib/codec2/win64/libgcc_s_sjlj-1.dll
deleted file mode 100644
index c8d71f74..00000000
Binary files a/tnc/lib/codec2/win64/libgcc_s_sjlj-1.dll and /dev/null differ
diff --git a/tnc/lib/codec2/win64/libwinpthread-1.dll b/tnc/lib/codec2/win64/libwinpthread-1.dll
deleted file mode 100644
index 1afe91c2..00000000
Binary files a/tnc/lib/codec2/win64/libwinpthread-1.dll and /dev/null differ
diff --git a/tnc/modem.py b/tnc/modem.py
index 86cfbecd..12ec6339 100644
--- a/tnc/modem.py
+++ b/tnc/modem.py
@@ -24,7 +24,7 @@ import re
 import queue
 import codec2
 import audio
-import multiprocessing
+
 
 
 
@@ -97,6 +97,9 @@ class RF():
                 
         # open codec2 instance        
         self.datac0_freedv = cast(codec2.api.freedv_open(codec2.api.FREEDV_MODE_DATAC0), c_void_p)
+        #self.c_lib.freedv_set_fmin_fmax(self.datac0_freedv, c_float(-150.0), c_float(150.0))
+
+        
         self.datac0_bytes_per_frame = int(codec2.api.freedv_get_bits_per_modem_frame(self.datac0_freedv)/8)
         self.datac0_payload_per_frame = self.datac0_bytes_per_frame -2
         self.datac0_n_nom_modem_samples = self.c_lib.freedv_get_n_nom_modem_samples(self.datac0_freedv)
@@ -166,8 +169,8 @@ class RF():
             
         try:                        
             structlog.get_logger("structlog").debug("[TNC] starting pyaudio callback")
-            #self.audio_stream.start_stream()
-            multiprocessing.Process(target=self.audio_stream.start_stream).start()
+            self.audio_stream.start_stream()
+
         except Exception as e:
             structlog.get_logger("structlog").error("[TNC] starting pyaudio callback failed", e=e)