要使用AKsampler和AKmicrophonetracker的组合，可以按照以下步骤进行解决：

1.导入所需的库：

import AudioKit as AK
from AudioKit import AKSampler, AKMicrophoneTracker

2.创建AKsampler实例并加载音频文件：

sampler = AKSampler()
sampler.load_wav("path_to_audio_file.wav")

3.创建AKmicrophonetracker实例：

tracker = AKMicrophoneTracker()

4.链接AKsampler和AKmicrophonetracker：

tracker.start()
AK.output = AKMixer(sampler, tracker)
AK.start()

5.运行应用程序：

try:
    while True:
        pass
except KeyboardInterrupt:
    pass

完整的代码示例：

import AudioKit as AK
from AudioKit import AKSampler, AKMicrophoneTracker

# 创建AKsampler实例并加载音频文件
sampler = AKSampler()
sampler.load_wav("path_to_audio_file.wav")

# 创建AKmicrophonetracker实例
tracker = AKMicrophoneTracker()

# 链接AKsampler和AKmicrophonetracker
tracker.start()
AK.output = AKMixer(sampler, tracker)
AK.start()

# 运行应用程序
try:
    while True:
        pass
except KeyboardInterrupt:
    pass

请确保已正确安装和配置AudioKit库，并将"path_to_audio_file.wav"替换为实际的音频文件路径。