You can't use my soundalias file with the one from merciless mod, because they use the same sound alias names. You are probably getting errors in console_mp.log file telling you of the conflict. Use the one from merciless only. Not both together.
The whole point of my "stand-alone" version was so you didn't need to use anything from merciless. It's a bit pointless me doing all this work if you are only going to use the merciless mod after all.