A broken audio visualizer

AudioVis.py

# Audio Visualizer Script

import bpy
import bmesh
import mathutils

import math
import os

# Set these variables to change things
number_of_cubes = 3
multiplier = 2 # Multiplier for the driver

# Place the filename of the song here (relative to the current .blend file)
filepath = ''

# Startframe for baking
bpy.data.scenes['Scene'].frame_current = 1

def add_driver_prop(object, type, axis, data_path, expression):
    # Adds a driver with the custom property as the variable to the object
    # Type..
    driver = bpy.context.object.driver_add(type, axis)
    
    driver.driver.type = 'SCRIPTED'
    v = driver.driver.variables.new()
    v.name = 'data'
    v.type = 'SINGLE_PROP'
    t = v.targets[0]
    t.id = object
    t.data_path = data_path
    
    driver.driver.expression = expression
    

def bake_audio(object, l, h):
    object['audio_data'] = 0.0
    object.keyframe_insert(data_path='["audio_data"]')
    
    back = bpy.context.area.type
    bpy.context.area.type = 'GRAPH_EDITOR'
    fp = os.path.join(os.path.dirname(bpy.data.filepath), filepath)
    bpy.ops.graph.sound_bake(filepath=fp, low=l, high=h)
    print(object)
    bpy.context.area.type = back

step = 100000 / number_of_cubes
c = 0

# Create the grid
for x in range(0, number_of_cubes):        
    bpy.ops.mesh.primitive_cube_add(radius=1, location=(x * 2, 0.0, 0.0))
    obj = bpy.context.active_object
    
    # For now, call this.. Later we can fix the creation script
    bpy.ops.object.origin_set(type='ORIGIN_GEOMETRY')
    
    low = float(c * step) + 0.0
    high = float((c + 1) * step) + 0.0
            
    # Now do the actual audio visualization
    print(obj, low, high)
    bake_audio(obj, low, high)
    
    # Attach the baked data to the z scale and location
    #add_driver_prop(obj, 'location', 2, '["audio_data"]', "data * " + str(multiplier))
    #add_driver_prop(obj, 'scale', 2, '["audio_data"]', "data * " + str(multiplier))
    
    # Deselect everything
    bpy.ops.object.select_all(action='DESELECT')
    c += 1



# Add the music to the VSE
bpy.context.area.type = 'SEQUENCE_EDITOR'
bpy.context.scene.sequence_editor_clear()
bpy.ops.sequencer.sound_strip_add(filepath = os.path.join(os.path.dirname(bpy.data.filepath), filepath), frame_start = 1)
bpy.context.scene.frame_end = bpy.context.sequences[0].frame_final_duration
bpy.context.area.type = 'TEXT_EDITOR'