Player died sound
Added temporary background music file
Added background music to scenes
Changed enemy laser sounds
Enemy died sounds onto prefab
Revert "Enemy died sounds onto prefab"

This reverts commit f97950b64ad4ccc297191ce7ac55d9f38d7526e0.
Revert "Changed enemy laser sounds"

This reverts commit 6e2c2c0fe18e7e1d881c12955431b854f1377334.
New audio files
Enemy died and laser sounds
Made power up sound less loud