Fix torchaudio.load() Path compatibility issue

[Mr-Neutr0n]

Summary

• Convert Path object to string before passing to torchaudio.load() for backend compatibility

Problem

When running the encodec CLI:

encodec -b 6.0 input.wav output.wav

The command fails with:

RuntimeError: torchaudio_sox::load_audio_file() Expected a value of type 'str' 
for argument '0' but instead found type 'PosixPath'.

This occurs because args.input is a pathlib.Path object, but some torchaudio backends (like sox) require a string path.

Solution

Convert the Path to string using str(args.input) before passing to torchaudio.load().

This is consistent with how save_audio() in utils.py already handles path conversion.

Test plan

• Run encodec -b 6.0 input.wav output.ecdc on a test audio file
• Verify encoding completes without path type errors

Fixes #92

[Mr-Neutr0n]

hey, just checking in on this one. it fixes a Path compatibility issue with torchaudio.load(). pretty small change, happy to adjust anything

[Mr-Neutr0n]

Friendly bump! Let me know if there's anything I should update or improve to help move this forward.