nou: musiqueta i veu per al game over i timings ajustats

config/assets.txt

@@ -64,6 +64,7 @@ SOUND|${PREFIX}/data/sound/title.wav
 SOUND|${PREFIX}/data/sound/voice_aw_aw_aw.wav
 SOUND|${PREFIX}/data/sound/voice_coffee.wav
 SOUND|${PREFIX}/data/sound/voice_credit_thankyou.wav
+SOUND|${PREFIX}/data/sound/voice_game_over.wav
 SOUND|${PREFIX}/data/sound/voice_get_ready.wav
 SOUND|${PREFIX}/data/sound/voice_no.wav
 SOUND|${PREFIX}/data/sound/voice_power_up.wav