#53 variable 'output' referenced before assignment

[d gilder]

When I try to burn an audio cd with mp3 files (with
auto-convert to wav on), I get the following error:

Traceback (most recent call last):
File "/usr/local/lib/eroaster/Application.py", line
755, in BurnWriterOptions
successfull = self.ConvertMp3ToWav()
File "/usr/local/lib/eroaster/Application.py", line
2388, in ConvertMp3ToWav
result = listmatch(output, "Playing")
UnboundLocalError: local variable 'output' referenced
before assignment