[bug] set_audio_duration_mismatch_tolerance not work for subprocess

[pkufool]

When loading mp3 or opus like format ausios that need a seperate process, using the function set_audio_duration_mismatch_tolerance is not work, prefer to use the enviorment variable, i.e. export LHOTSE_AUDIO_DURATION_MISMATCH_TOLERANCE=0.05

[pzelasko]

Yes, you'd need to set it separately in every subprocess. For PT dataloader there's a worker_init_fn you can provide.