BF: Non-ASCII audio driver names causes error

psychopy/sound/__init__.py

@@ -139,7 +139,7 @@ def setDevice(dev, kind=None):
         pass  # do nothing
     elif dev not in backend.getDevices(kind='output'):
         devNames = backend.getDevices(kind='output').keys()
-        logging.error("Requested audio device '{}' that is not available on "
+        logging.error(u"Requested audio device '{}' that is not available on "
                         "this hardware. The 'audioDevice' preference should be one of "
                         "{}".format(dev, devNames))
     else:

psychopy/sound/backend_pyo.py

@@ -54,6 +54,7 @@ def getDevices(kind=None):
 
     The dict keys are names and items are dicts of properties
     """
+    osEncoding = sys.getfilesystemencoding()
     inputs, outputs = pyo.pa_get_devices_infos()
     if kind is None:
         allDevs = inputs.update(outputs)
@@ -64,7 +65,8 @@ def getDevices(kind=None):
     devs = {}
     for ii in allDevs:  # in pyo this is a dict but keys are ii ! :-/
         dev = allDevs[ii]
-        devs[dev['name']] = dev
+        devName = dev['name'].decode(osEncoding) # convert to unicode
+        devs[devName] = dev
         dev['id'] = ii
     return devs