You need the this for the tutorial:
-A music with your favourite music in format .wav (.wav is a music file similar to .mp3)
-WinMPQ Program to add the music in your game
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First Steps:
1-Serch your music and rename the file to "terran3.wav ", "terran2.wav " or "terran1.wav " is your election.
2-Open WINMPQ.exe
3-In WINMPQ, click "Open" and serch Broodat.mpq in your StarCraft Folder, select broodat.mpq
4-Click in "ADD" and serch your music
5-Add the music, you music need the name "terran3.wav ", "terran2.wav " or "terran1.wav "
6-In the next window paste this "music\"
7-Close winmpq.exe
8-Open StarCraft Broodwar and play with terran.
9-Enjoy the StarCraft Enhancement!