As specific URLs change frequently due to copyright takedowns or link rot, you are most likely to find a working eSound.afs file on these platforms:
have compiled lists of original MEGA download links for the full suite of DAT files, including Custom Commentary Patches: If you want a more modern feel, the PES 6 FIFA English Commentary Patch pes 6 esoundafs download link
Your PES 6 installation likely contains: As specific URLs change frequently due to copyright