Silent Hill and Dark Stalkers 3 no sound PSX

HiI've downloaded these two games from here, burned them with Alcohol 120 and they run fine, except the FMV and voice-overs in SH are mute and there's no music in DS3.Can someone give me a few hints on what's wrong and how to fix it?Thanks

Run the original files in an emulator, like ePSXe. Check and see if the audio data is there or not.If it is, then the problem may have happened during burning, maybe the subchannel data was not correctly written.

Alright, thanks for the tip :)