Hello, I am completely new to this, I was watching some mixing tutorials on youtube, about compressing, limiters, mastering...they are all about the volume, but why would you render a track that is quiet and then make it louder with mastering, cant you jsut do it in the program ? Also with compressors, why would you make something quieter with this, cant you just lower the volume of the instrument, same with limiters except louder. This might be stupid...but i need the answer....