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