Cadence: Fix ALSA bridge start when .asoundrc has been modified externally

doc/Carla-TODO

@@ -12,7 +12,7 @@ ENGINE:
  - complete RtAudio+RtMidi support
  - implement Haiku Media support (based from JACK?)
  - implement latency in continuos-rack mode
- - pre-allocate audio buffers in continuos-rack mode
+ - pre-allocate audio buffers in continuous-rack mode
 
 LADSPA:
 

src/cadence.py

@@ -1484,6 +1484,7 @@ class CadenceMainW(QMainWindow, ui_cadence.Ui_CadenceMainW):
 
     @pyqtSlot()
     def slot_AlsaBridgeStart(self):
+        self.slot_AlsaBridgeStop()
         self.func_start_tool("cadence-aloop-daemon")
 
     @pyqtSlot()