'import rawread': frame not available

Hello,
I just use the example to test librosa, using python3.7 on win10:
>>> filename = librosa.util.example_audio_file()
>>> y, sr = librosa.load(filename)

Result:FileNotFoundError: [WinError 2] 系统找不到指定的文件。

Librosa uses audioread to open audio file, then I find 'frame not available' when execute 'from . import rawread' in function 'available_backends()'. Could you tell me how to solve this question?

Thanks.

Reproduce the reported failure on Python 3.7 and Windows 10 using the librosa example shown in the issue. Start by examining available_backends() and the rawread import, then trace the reported FileNotFoundError and “frame not available” result. Done means the example audio file can be opened successfully or the issue documents the required missing dependency and a clear resolution.

Written by the indexing model from the issue text.