Maintenance for the week of December 23:
• NA megaservers for maintenance – December 23, 4:00AM EST (9:00 UTC) - 9:00AM EST (14:00 UTC)
• EU megaservers for maintenance – December 23, 9:00 UTC (4:00AM EST) - 14:00 UTC (9:00AM EST)
Don't create a new thread about the same topic, and no. Altering game files in that way is explicitly against the ToS. I also doubt there's a single file devoted to the lip-sync effects.