Added the Owen sounds.

• changed audio levels

• changed launcher sounds
  
• changed sound levels

• fixed the typhoon not having any sound.

• changed some explosion sounds
  
• changed audio levels
  
• added launcher sounds!

• changed some gun sounds
  
• changed explosion sounds
  
• removed the voice part of the counter-attack so all you hear is the whistle and the charging enemy.[/l

• changed the distant explosions to sound less like artillery