Hey guys, I'm the musician who done the music for this game.
For those of you with the sound issues, it's because of a mistake you made installing the game. For everything to work you must download ALL of these and follow the instructions below:
Remove the folder from your computer:
First download and unpack this file:
VERSION 1.0 RELEASE (28/12/2010)
Pokémon Nightmare First Release
Then in the following order, download the others and copy over the files to the main folder, ONE AFTER THE OTHER, ONE AT A TIME, DO NOT DO THEM AT THE SAME TIME OTHERWISE IT WILL MESS IT ALL UP
VERSION 1.3.1 RELEASE (25/03/2011)
VERSION 1.5 (BASE) RELEASE (23/09/2011)
VERSION 1.5.2 RELEASE (15/10/2011)
VERSION 1.5.3 RELEASE (25/12/2011)
After that, the sound SHOULD work, Good luck!
P.S: This doesn't fix the lag issue.