The patch is for the Spanish PC version of the game. In the first level (Parisian Backstreets) all Lara speeches (except "I feel stronger") are missing; there are subtitles but without audio. Luckily, Mad managed to enable PS2 dialogues (where everything works fine) on PC version using the tools and the guide by Nakamichi680.
How to install:
Put the file in TRAOD/Data/Audio folder.
Download the Audio Patch