diff --git a/src/actor.rs b/src/actor.rs
index 17964a9..a567401 100644
--- a/src/actor.rs
+++ b/src/actor.rs
@@ -40,7 +40,7 @@ impl Plugin for ActorPlugin {
                 update_power.run_if(game_running),
                 handle_gravity.run_if(game_running),
                 handle_wants_rotation.run_if(game_running),
-                handle_wants_acceleration.run_if(game_running),
+                handle_wants_acceleration.run_if(game_running).run_if(alive),
                 handle_wants_maxrotation.run_if(game_running),
                 handle_wants_maxvelocity
                     .run_if(game_running)
@@ -231,7 +231,7 @@ pub enum EngineType {
     Ion,
 }
 
-#[derive(Component)]
+#[derive(Component, Copy, Clone)]
 pub struct Engine {
     pub thrust_forward: f32,
     pub thrust_back: f32,
@@ -588,7 +588,9 @@ pub fn handle_vehicle_enter_exit(
                             commands.entity(driver).remove::<PlayerCamera>();
                             commands.entity(driver).remove::<Collider>();
                             commands.entity(driver).insert(JustNowEnteredVehicle);
-                            commands.entity(vehicle).insert(WantsAcceleration::default());
+                            commands
+                                .entity(vehicle)
+                                .insert(WantsAcceleration::default());
                             commands.entity(vehicle).remove::<hud::IsTargeted>();
                             commands.entity(vehicle).insert(PlayerCamera);
                             commands.entity(vehicle).insert(PlayerDrivesThis);
@@ -722,23 +724,29 @@ fn handle_wants_rotation(mut q_actor: Query<(&mut Rotation, &WantsRotation)>) {
 }
 
 fn handle_wants_acceleration(
+    time: Res<Time>,
+    settings: Res<var::Settings>,
     jupiter_pos: Res<game::JupiterPos>,
+    q_audiosinks: Query<(&audio::Sfx, &AudioSink)>,
     mut q_actor: Query<(
         Entity,
         &Transform,
         &Position,
         &mut LinearVelocity,
+        Option<&mut Engine>,
         Option<&WantsAcceleration>,
         Option<&hud::IsTargeted>,
         Option<&PlayerCamera>,
     )>,
 ) {
+    let dt = time.delta_seconds();
+
     // Vector elements: (Entity, is_player, pos)
     let mut request_closest: Vec<(Entity, bool, DVec3)> = vec![];
     let mut closest_map: HashMap<Entity, DVec3> = HashMap::new();
 
     // First, determine whether any actor wants to brake (=match velocity)
-    for (entity, _, pos, _, accel, _, is_player) in &mut q_actor {
+    for (entity, _, pos, _, _, accel, _, is_player) in &mut q_actor {
         if accel.is_some() && accel.unwrap().brake {
             request_closest.push((entity, is_player.is_some(), pos.0.clone()));
         }
@@ -751,7 +759,7 @@ fn handle_wants_acceleration(
         // First, if this is the player, check whether they targeted anything
         // so we can match velocity to the target.
         if *is_player {
-            for (_, _, _, v, _, is_target, _) in &q_actor {
+            for (_, _, _, v, _, _, is_target, _) in &q_actor {
                 if is_target.is_some() {
                     target_v = Some(v.0);
                     break;
@@ -762,7 +770,7 @@ fn handle_wants_acceleration(
         // If not, simply look for the closest object and match velocity to that.
         if target_v.is_none() {
             let mut closest_distance = camera::MAX_DIST_FOR_MATCH_VELOCITY;
-            for (testentity, _, testpos, v, _, _, _) in &q_actor {
+            for (testentity, _, testpos, v, _, _, _, _) in &q_actor {
                 if *entity != testentity {
                     let distance = (*pos - testpos.0).length();
                     if distance < closest_distance {
@@ -784,15 +792,83 @@ fn handle_wants_acceleration(
         }
     }
 
-    for (entity, trans, _, mut v, accel, _, _) in &mut q_actor {
-        if let Some(accel) = accel {
+    // Finally, apply the requested acceleration to the actor's velocity
+    let mut play_thruster_sound = false;
+    let mut players_engine: Option<Engine> = None;
+    for (entity, trans, _, mut v, engine, accel, _, is_player) in &mut q_actor {
+        let mut thruster_on = false;
+        if let (Some(engine), Some(accel)) = (engine, accel) {
             if accel.brake {
                 if let Some(target_v) = closest_map.get(&entity) {
                     **v = *target_v;
+                    thruster_on = true;
                 }
             } else if accel.direction != DVec3::ZERO {
                 let delta_v = trans.rotation * accel.direction.as_vec3();
                 **v += delta_v.as_dvec3();
+                thruster_on = true;
+            }
+            if is_player.is_some() {
+                play_thruster_sound = thruster_on;
+                players_engine = Some((*engine).clone());
+            }
+        }
+    }
+
+    // Play sound effects for player acceleration
+    let engine = if let Some(engine) = players_engine {
+        engine
+    } else {
+        warn!("Failed to retrieve player's engine type for playing SFX");
+        Engine::default()
+    };
+
+    let mut sinks: HashMap<audio::Sfx, &AudioSink> = HashMap::new();
+    for (sfx, sink) in &q_audiosinks {
+        sinks.insert(*sfx, sink);
+    }
+    let sinks = vec![
+        (
+            1.0,
+            1.0, //boost as f32,
+            actor::EngineType::Monopropellant,
+            sinks.get(&audio::Sfx::Thruster),
+        ),
+        (
+            1.0,
+            1.0,
+            actor::EngineType::Ion,
+            sinks.get(&audio::Sfx::Ion),
+        ),
+    ];
+
+    let seconds_to_max_vol = 0.05;
+    let seconds_to_min_vol = 0.05;
+    for sink_data in sinks {
+        if let (vol_boost, speed, engine_type, Some(sink)) = sink_data {
+            if settings.mute_sfx {
+                sink.pause();
+            } else {
+                let volume = sink.volume();
+                let maxvol = settings.volume_sfx * vol_boost;
+                if engine.engine_type == engine_type {
+                    if play_thruster_sound {
+                        sink.set_speed(speed);
+                        sink.play();
+                        if volume < maxvol {
+                            sink.set_volume(
+                                (volume + dt / seconds_to_max_vol).clamp(0.0, maxvol),
+                            );
+                        }
+                    } else {
+                        sink.set_volume((volume - dt / seconds_to_min_vol).clamp(0.0, maxvol));
+                    }
+                } else if volume > 0.0 {
+                    sink.set_volume((volume - dt / seconds_to_min_vol).clamp(0.0, maxvol));
+                }
+                if volume < 0.0001 {
+                    sink.pause();
+                }
             }
         }
     }