diff --git a/autogen/convert_functions.py b/autogen/convert_functions.py
index 78f1e1fc..e5f2b250 100644
--- a/autogen/convert_functions.py
+++ b/autogen/convert_functions.py
@@ -41,6 +41,7 @@ in_files = [
     "src/pc/lua/utils/smlua_collision_utils.h",
     "src/pc/lua/utils/smlua_model_utils.h",
     "src/pc/lua/utils/smlua_text_utils.h",
+    "src/pc/lua/utils/smlua_audio_utils.h",
     "src/game/object_helpers.c",
     "src/game/obj_behaviors.c",
     "src/game/obj_behaviors_2.c",
@@ -58,7 +59,7 @@ override_allowed_functions = {
     "src/game/save_file.h":                 [ "save_file_get_", "save_file_set_flags", "save_file_clear_flags" ],
     "src/pc/lua/utils/smlua_model_utils.h": [ "smlua_model_util_get_id" ],
     "src/game/object_list_processor.h":     [ "set_object_respawn_info_bits" ],
-    "src/game/mario_misc.h":                [ "bhv_toad.*", "bhv_unlock_door.*" ]
+    "src/game/mario_misc.h":                [ "bhv_toad.*", "bhv_unlock_door.*" ],
 }
 
 override_disallowed_functions = {
@@ -84,7 +85,8 @@ override_disallowed_functions = {
     "src/game/spawn_sound.c":              [ "spawner" ],
     "src/pc/lua/utils/smlua_obj_utils.h":  [ "spawn_object_remember_field" ],
     "src/game/camera.h":                   [ "update_camera", "init_camera", "stub_camera", "^reset_camera", "move_point_along_spline" ],
-    "src/game/behavior_actions.h":         [ "bhv_dust_smoke_loop", "bhv_init_room" ]
+    "src/game/behavior_actions.h":         [ "bhv_dust_smoke_loop", "bhv_init_room" ],
+    "src/pc/lua/utils/smlua_audio_utils.h": [ "smlua_audio_utils_override"],
 }
 
 lua_function_params = {
diff --git a/autogen/lua_definitions/functions.lua b/autogen/lua_definitions/functions.lua
index 25c923b2..dd93f768 100644
--- a/autogen/lua_definitions/functions.lua
+++ b/autogen/lua_definitions/functions.lua
@@ -7017,6 +7017,14 @@ function save_file_set_flags(flags)
     -- ...
 end
 
+--- @param sequenceId integer
+--- @param bankId integer
+--- @param m64Name string
+--- @return nil
+function smlua_audio_utils_replace_sequence(sequenceId, bankId, m64Name)
+    -- ...
+end
+
 --- @param startX number
 --- @param startY number
 --- @param startZ number
diff --git a/docs/lua/functions.md b/docs/lua/functions.md
index 65ef7ac0..b66f80f7 100644
--- a/docs/lua/functions.md
+++ b/docs/lua/functions.md
@@ -1302,6 +1302,11 @@
 
 <br />
 
+- smlua_audio_utils.h
+   - [smlua_audio_utils_replace_sequence](#smlua_audio_utils_replace_sequence)
+
+<br />
+
 - smlua_collision_utils.h
    - [collision_find_surface_on_ray](#collision_find_surface_on_ray)
    - [get_water_surface_pseudo_floor](#get_water_surface_pseudo_floor)
@@ -24550,6 +24555,34 @@ The `reliable` field will ensure that the packet arrives, but should be used spa
 
 <br />
 
+---
+# functions from smlua_audio_utils.h
+
+<br />
+
+
+## [smlua_audio_utils_replace_sequence](#smlua_audio_utils_replace_sequence)
+
+### Lua Example
+`smlua_audio_utils_replace_sequence(sequenceId, bankId, m64Name)`
+
+### Parameters
+| Field | Type |
+| ----- | ---- |
+| sequenceId | `integer` |
+| bankId | `integer` |
+| m64Name | `string` |
+
+### Returns
+- None
+
+### C Prototype
+`void smlua_audio_utils_replace_sequence(u8 sequenceId, u8 bankId, const char* m64Name);`
+
+[:arrow_up_small:](#)
+
+<br />
+
 ---
 # functions from smlua_collision_utils.h
 
diff --git a/src/audio/load.c b/src/audio/load.c
index 00bd0327..ba2ffbb8 100644
--- a/src/audio/load.c
+++ b/src/audio/load.c
@@ -10,6 +10,7 @@
 
 #include "pc/platform.h"
 #include "pc/fs/fs.h"
+#include "pc/lua/utils/smlua_audio_utils.h"
 
 #define ALIGN16(val) (((val) + 0xF) & ~0xF)
 
@@ -1374,6 +1375,7 @@ void *sequence_dma_immediate(s32 seqId, s32 arg1) {
     seqLength = gSeqFileHeader->seqArray[seqId].len + 0xf;
     seqLength = ALIGN16(seqLength);
     seqData = gSeqFileHeader->seqArray[seqId].offset;
+
     ptr = alloc_bank_or_seq(&gSeqLoadedPool, 1, seqLength, arg1, seqId);
     if (ptr == NULL) {
         return NULL;
@@ -1396,6 +1398,7 @@ void *sequence_dma_async(s32 seqId, s32 arg1, struct SequencePlayer *seqPlayer)
     seqLength = gSeqFileHeader->seqArray[seqId].len + 0xf;
     seqLength = ALIGN16(seqLength);
     seqData = gSeqFileHeader->seqArray[seqId].offset;
+
     ptr = alloc_bank_or_seq(&gSeqLoadedPool, 1, seqLength, arg1, seqId);
     if (ptr == NULL) {
         eu_stubbed_printf_0("Heap Overflow Error\n");
@@ -1558,6 +1561,25 @@ void load_sequence_internal(u32 player, u32 seqId, s32 loadAsync) {
     struct SequencePlayer *seqPlayer = &gSequencePlayers[player];
     UNUSED u32 padding[2];
 
+    // do custom music override
+    {
+        s32 bankId = 0;
+        if (smlua_audio_utils_override(seqId, &bankId, &sequenceData)) {
+            sequence_player_disable(seqPlayer);
+            seqPlayer->defaultBank[0] = bankId;
+            if (!bank_load_immediate(bankId, 2)) { return; }
+            seqPlayer->seqId = seqId;
+            gSeqLoadStatus[seqId] = SOUND_LOAD_STATUS_COMPLETE;
+            init_sequence_player(player);
+            seqPlayer->scriptState.depth = 0;
+            seqPlayer->delay = 0;
+            seqPlayer->enabled = TRUE;
+            seqPlayer->seqData = sequenceData;
+            seqPlayer->scriptState.pc = sequenceData;
+            return;
+        }
+    }
+
     if (seqId >= gSequenceCount) {
         return;
     }
diff --git a/src/game/level_update.c b/src/game/level_update.c
index 84e07148..9a9e0fbd 100644
--- a/src/game/level_update.c
+++ b/src/game/level_update.c
@@ -1561,4 +1561,7 @@ void fake_lvl_init_from_save_file(void) {
     save_file_move_cap_to_default_location();
     select_mario_cam_mode();
     set_yoshi_as_not_dead();
+    fadeout_music(30);
+
+    gChangeLevel = gLevelValues.entryLevel;
 }
diff --git a/src/pc/lua/smlua.c b/src/pc/lua/smlua.c
index 5a4fea1d..dd5dfdc6 100644
--- a/src/pc/lua/smlua.c
+++ b/src/pc/lua/smlua.c
@@ -143,6 +143,7 @@ void smlua_update(void) {
 
 void smlua_shutdown(void) {
     smlua_text_utils_reset_all();
+    smlua_audio_utils_reset_all();
     smlua_cobject_allowlist_shutdown();
     smlua_cpointer_allowlist_shutdown();
     lua_State* L = gLuaState;
diff --git a/src/pc/lua/smlua_functions_autogen.c b/src/pc/lua/smlua_functions_autogen.c
index 7c23fb56..5a50f171 100644
--- a/src/pc/lua/smlua_functions_autogen.c
+++ b/src/pc/lua/smlua_functions_autogen.c
@@ -24,6 +24,7 @@
 #include "src/pc/lua/utils/smlua_collision_utils.h"
 #include "src/pc/lua/utils/smlua_model_utils.h"
 #include "src/pc/lua/utils/smlua_text_utils.h"
+#include "src/pc/lua/utils/smlua_audio_utils.h"
 #include "src/engine/surface_load.h"
 #include "src/game/object_list_processor.h"
 #include "src/game/behavior_actions.h"
@@ -13182,6 +13183,24 @@ int smlua_func_find_unimportant_object(UNUSED lua_State* L) {
     return 1;
 }
 
+/*
+int smlua_func_geo_choose_area_ext(lua_State* L) {
+    if(!smlua_functions_valid_param_count(L, 3)) { return 0; }
+
+    s32 callContext = smlua_to_integer(L, 1);
+    if (!gSmLuaConvertSuccess) { return 0; }
+    struct GraphNode* node = (struct GraphNode*)smlua_to_cobject(L, 2, LOT_GRAPHNODE);
+    if (!gSmLuaConvertSuccess) { return 0; }
+//  Mat4 mtx = (Mat4)smlua_to_cobject(L, 3, LOT_???); <--- UNIMPLEMENTED
+    if (!gSmLuaConvertSuccess) { return 0; }
+
+    extern Gfx *geo_choose_area_ext(UNUSED s32 callContext, struct GraphNode *node, UNUSED Mat4 mtx);
+    UNIMPLEMENTED -->(L, geo_choose_area_ext(callContext, node, mtx));
+
+    return 1;
+}
+*/
+
 int smlua_func_geo_offset_klepto_debug(lua_State* L) {
     if(!smlua_functions_valid_param_count(L, 3)) { return 0; }
 
@@ -14597,6 +14616,25 @@ int smlua_func_save_file_set_flags(lua_State* L) {
     return 1;
 }
 
+  /////////////////////////
+ // smlua_audio_utils.h //
+/////////////////////////
+
+int smlua_func_smlua_audio_utils_replace_sequence(lua_State* L) {
+    if(!smlua_functions_valid_param_count(L, 3)) { return 0; }
+
+    u8 sequenceId = smlua_to_integer(L, 1);
+    if (!gSmLuaConvertSuccess) { return 0; }
+    u8 bankId = smlua_to_integer(L, 2);
+    if (!gSmLuaConvertSuccess) { return 0; }
+    const char* m64Name = smlua_to_string(L, 3);
+    if (!gSmLuaConvertSuccess) { return 0; }
+
+    smlua_audio_utils_replace_sequence(sequenceId, bankId, m64Name);
+
+    return 1;
+}
+
   /////////////////////////////
  // smlua_collision_utils.h //
 /////////////////////////////
@@ -16827,6 +16865,7 @@ void smlua_bind_functions_autogen(void) {
     smlua_bind_function(L, "enable_time_stop_including_mario", smlua_func_enable_time_stop_including_mario);
     smlua_bind_function(L, "find_object_with_behavior", smlua_func_find_object_with_behavior);
     smlua_bind_function(L, "find_unimportant_object", smlua_func_find_unimportant_object);
+    //smlua_bind_function(L, "geo_choose_area_ext", smlua_func_geo_choose_area_ext); <--- UNIMPLEMENTED
     smlua_bind_function(L, "geo_offset_klepto_debug", smlua_func_geo_offset_klepto_debug);
     //smlua_bind_function(L, "geo_offset_klepto_held_object", smlua_func_geo_offset_klepto_held_object); <--- UNIMPLEMENTED
     //smlua_bind_function(L, "geo_switch_anim_state", smlua_func_geo_switch_anim_state); <--- UNIMPLEMENTED
@@ -16930,6 +16969,9 @@ void smlua_bind_functions_autogen(void) {
     smlua_bind_function(L, "save_file_get_total_star_count", smlua_func_save_file_get_total_star_count);
     smlua_bind_function(L, "save_file_set_flags", smlua_func_save_file_set_flags);
 
+    // smlua_audio_utils.h
+    smlua_bind_function(L, "smlua_audio_utils_replace_sequence", smlua_func_smlua_audio_utils_replace_sequence);
+
     // smlua_collision_utils.h
     smlua_bind_function(L, "collision_find_surface_on_ray", smlua_func_collision_find_surface_on_ray);
     smlua_bind_function(L, "get_water_surface_pseudo_floor", smlua_func_get_water_surface_pseudo_floor);
diff --git a/src/pc/lua/utils/smlua_audio_utils.c b/src/pc/lua/utils/smlua_audio_utils.c
new file mode 100644
index 00000000..7bb2e394
--- /dev/null
+++ b/src/pc/lua/utils/smlua_audio_utils.c
@@ -0,0 +1,119 @@
+#include "types.h"
+#include "pc/mods/mods.h"
+#include "pc/lua/smlua.h"
+#include "pc/debuglog.h"
+
+#define MAX_OVERRIDE 64
+
+struct AudioOverride {
+    bool enabled;
+    bool loaded;
+    const char* filename;
+    u64 length;
+    u8 bank;
+    u8* buffer;
+};
+
+struct AudioOverride sAudioOverrides[MAX_OVERRIDE] = { 0 };
+
+static smlua_audio_utils_reset(struct AudioOverride* override) {
+    if (override == NULL) { return; }
+
+    override->enabled = false;
+    override->loaded = false;
+
+    if (override->filename) {
+        free(override->filename);
+        override->filename = NULL;
+    }
+
+    override->length = 0;
+    override->bank = 0;
+
+    if (override->buffer != NULL) {
+        free(override->filename);
+        override->filename = NULL;
+    }
+}
+
+void smlua_audio_utils_reset_all(void) {
+    for (s32 i = 0; i < MAX_OVERRIDE; i++) {
+        smlua_audio_utils_reset(&sAudioOverrides[i]);
+    }
+}
+
+bool smlua_audio_utils_override(u8 sequenceId, s32* bankId, void** seqData) {
+    if (sequenceId >= MAX_OVERRIDE) { return false; }
+    struct AudioOverride* override = &sAudioOverrides[sequenceId];
+    if (!override->enabled) { return false; }
+
+    if (override->loaded) {
+        *seqData = override->buffer;
+        *bankId = override->bank;
+        return true;
+    }
+
+    static u8* buffer = NULL;
+    static long int length = 0;
+
+    FILE* fp = fopen(override->filename, "rb");
+    if (!fp) { return false; }
+    fseek(fp, 0L, SEEK_END);
+    length = ftell(fp);
+
+    buffer = malloc(length+1);
+    if (buffer == NULL) {
+        LOG_ERROR("Failed to malloc m64 sound file");
+        fclose(fp);
+        return false;
+    }
+
+    fseek(fp, 0L, SEEK_SET);
+    fread(buffer, length, 1, fp);
+
+    fclose(fp);
+
+    // cache
+    override->loaded = true;
+    override->buffer = buffer;
+    override->length = length;
+
+    *seqData = buffer;
+    *bankId = override->bank;
+    return true;
+}
+
+void smlua_audio_utils_replace_sequence(u8 sequenceId, u8 bankId, const char* m64Name) {
+    if (gLuaActiveMod == NULL) { return; }
+    if (sequenceId >= MAX_OVERRIDE) {
+        LOG_LUA("Invalid sequenceId given to smlua_audio_utils_replace_sequence(): %d", sequenceId);
+        return;
+    }
+
+    char m64path[SYS_MAX_PATH] = { 0 };
+    if (snprintf(m64path, SYS_MAX_PATH-1, "sound/%s.m64", m64Name) < 0) {
+        LOG_LUA("Could not find m64 at path: %s", m64path);
+        return;
+    }
+
+    for (s32 i = 0; i < gLuaActiveMod->fileCount; i++) {
+        struct ModFile* file = &gLuaActiveMod->files[i];
+        if (!strcmp(file->relativePath, m64path)) {
+
+            char fullPath[SYS_MAX_PATH] = { 0 };
+            if (snprintf(fullPath, SYS_MAX_PATH - 1, "%s/%s", gLuaActiveMod->basePath, m64path) < 0) {
+                LOG_ERROR("Failed to concat full path to m64: %s", m64Name);
+                return;
+            }
+
+            struct AudioOverride* override = &sAudioOverrides[sequenceId];
+            smlua_audio_utils_reset(override);
+            override->filename = strdup(fullPath);
+            override->enabled = true;
+            override->bank = bankId;
+            return;
+        }
+    }
+
+    LOG_LUA("Could not find m64 at path: %s", m64path);
+}
diff --git a/src/pc/lua/utils/smlua_audio_utils.h b/src/pc/lua/utils/smlua_audio_utils.h
new file mode 100644
index 00000000..c2891cc3
--- /dev/null
+++ b/src/pc/lua/utils/smlua_audio_utils.h
@@ -0,0 +1,8 @@
+#ifndef SMLUA_AUDIO_UTILS_H
+#define SMLUA_AUDIO_UTILS_H
+
+bool smlua_audio_utils_override(u8 sequenceId, s32* bankId, void** seqData);
+
+void smlua_audio_utils_replace_sequence(u8 sequenceId, u8 bankId, const char* m64Name);
+
+#endif
\ No newline at end of file
diff --git a/src/pc/mods/mod.c b/src/pc/mods/mod.c
index 1af16c45..c0b33fb6 100644
--- a/src/pc/mods/mod.c
+++ b/src/pc/mods/mod.c
@@ -295,6 +295,44 @@ static bool mod_load_files(struct Mod* mod, char* modName, char* fullPath) {
             closedir(d);
         }
     }
+
+    // deal with sound directory
+    {
+        // concat sound directory
+        char soundPath[SYS_MAX_PATH] = { 0 };
+        if (!concat_path(soundPath, fullPath, "sound")) {
+            LOG_ERROR("Could not concat directory '%s' + '%s'", fullPath, "sound");
+            return false;
+        }
+
+        // open sound directory
+        struct dirent* dir = NULL;
+        DIR* d = opendir(soundPath);
+        if (d) {
+            // iterate mod directory
+            char path[SYS_MAX_PATH] = { 0 };
+            char relativePath[SYS_MAX_PATH] = { 0 };
+            while ((dir = readdir(d)) != NULL) {
+                // sanity check / fill path[]
+                if (!directory_sanity_check(dir, soundPath, path)) { continue; }
+                if (snprintf(relativePath, SYS_MAX_PATH - 1, "sound/%s", dir->d_name) < 0) {
+                    LOG_ERROR("Could not concat sound path!");
+                    return false;
+                }
+
+                // only consider m64 files
+                if (!str_ends_with(path, ".m64")) {
+                    continue;
+                }
+
+                // allocate file
+                struct ModFile* file = mod_allocate_file(mod, relativePath);
+                if (file == NULL) { return false; }
+            }
+
+            closedir(d);
+        }
+    }
     return true;
 }
 
diff --git a/src/pc/network/network.c b/src/pc/network/network.c
index d4412299..dfa37403 100644
--- a/src/pc/network/network.c
+++ b/src/pc/network/network.c
@@ -4,6 +4,7 @@
 #include "object_fields.h"
 #include "object_constants.h"
 #include "behavior_table.h"
+#include "src/game/hardcoded.h"
 #ifdef DISCORD_SDK
 #include "discord/discord.h"
 #endif