diff --git a/prepare.sh b/prepare.sh
index bca101c..79b190a 100755
--- a/prepare.sh
+++ b/prepare.sh
@@ -11,6 +11,6 @@ APP_NAME='planetsudo ai'
 APP_NAME=${BLUE}${APP_NAME}${NC}
 echo -e "=== ${APP_NAME} project ${WHITE}cleanup${NC}"
 ./gradlew clean --quiet $@
-echo -e "=== ${APP_NAME} project ${WHITE}installation${NC}"
+echo -e "=== ${APP_NAME} project ${WHITE}prepare${NC}"
 echo -e "nothing to prepare..."
 echo -e "=== ${APP_NAME} was ${GREEN}successfully${NC} prepared."
diff --git a/src/main/resources/sound/c4_explode1.wav b/src/main/resources/sound/c4_explode1.wav
deleted file mode 100644
index aff0fff..0000000
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diff --git a/src/main/resources/sound/explosion_agent.wav b/src/main/resources/sound/explosion_agent.wav
deleted file mode 100644
index 4c8f770..0000000
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diff --git a/src/main/resources/sound/large-underwater-explosion-190270.wav b/src/main/resources/sound/large-underwater-explosion-190270.wav
new file mode 100644
index 0000000..7d5fb3f
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diff --git a/src/main/resources/sound/woosh_low_long01-98755.wav b/src/main/resources/sound/woosh_low_long01-98755.wav
new file mode 100644
index 0000000..7b0e0d4
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