diff --git a/src/core/global/globals.hpp b/src/core/global/globals.hpp
index 0b701e5..9cbb90e 100644
--- a/src/core/global/globals.hpp
+++ b/src/core/global/globals.hpp
@@ -16,10 +16,11 @@ namespace Soundux
         inline Objects::Config gConfig;
         inline Objects::Hotkeys gHotKeys;
         inline Objects::Settings gSettings;
-        inline std::shared_ptr<Objects::Window> gGui;
+        inline std::unique_ptr<Objects::Window> gGui;
         inline Objects::ProcessingQueue<std::uintptr_t> gQueue;
 
         /* Allows for fast & easy sound access, is populated on start up */
-        inline std::map<std::uint32_t, std::reference_wrapper<Objects::Sound>> gSounds;
+        inline std::shared_mutex gSoundsMutex;
+        inline std::map<std::uint32_t, Objects::Sound> gSounds;
     } // namespace Globals
 } // namespace Soundux
\ No newline at end of file
diff --git a/src/core/global/objects.cpp b/src/core/global/objects.cpp
new file mode 100644
index 0000000..fdbb9d3
--- /dev/null
+++ b/src/core/global/objects.cpp
@@ -0,0 +1,69 @@
+#include "objects.hpp"
+#include "globals.hpp"
+#include <algorithm>
+#include <fancy.hpp>
+#include <functional>
+#include <optional>
+
+namespace Soundux::Objects
+{
+    void Data::addTab(Tab tab)
+    {
+        tab.id = tabs.size();
+        tabs.push_back(tab);
+        std::unique_lock lock(Globals::gSoundsMutex);
+
+        for (const auto &sound : tab.sounds)
+        {
+            Globals::gSounds.insert({sound.id, sound});
+        }
+    }
+    void Data::removeTabById(const std::uint32_t &index)
+    {
+        std::unique_lock lock(Globals::gSoundsMutex);
+        if (tabs.size() > index)
+        {
+            auto &tab = tabs.at(index);
+            for (auto &sound : tab.sounds)
+            {
+                Globals::gSounds.erase(sound.id);
+            }
+
+            tabs.erase(tabs.begin() + index);
+        }
+        else
+        {
+            Fancy::fancy.logTime().warning() << "Tried to remove non existant tab" << std::endl;
+        }
+    }
+    void Data::setTabs(const std::vector<Tab> &newTabs)
+    {
+        tabs = newTabs;
+        std::unique_lock lock(Globals::gSoundsMutex);
+
+        Globals::gSounds.clear();
+        for (const auto &tab : tabs)
+        {
+            for (const auto &sound : tab.sounds)
+            {
+                Globals::gSounds.insert({sound.id, sound});
+            }
+        }
+    }
+    std::vector<Tab> Data::getTabs() const
+    {
+        return tabs;
+    }
+    std::optional<Sound> Data::getSound(const std::uint32_t &id)
+    {
+        std::shared_lock lock(Globals::gSoundsMutex);
+
+        if (Globals::gSounds.find(id) != Globals::gSounds.end())
+        {
+            return Globals::gSounds.at(id);
+        }
+
+        Fancy::fancy.logTime().warning() << "Tried to access non existant sound " << id << std::endl;
+        return std::nullopt;
+    }
+} // namespace Soundux::Objects
\ No newline at end of file
diff --git a/src/core/global/objects.hpp b/src/core/global/objects.hpp
index 2b69560..841da9f 100644
--- a/src/core/global/objects.hpp
+++ b/src/core/global/objects.hpp
@@ -1,4 +1,5 @@
 #pragma once
+#include <functional>
 #include <map>
 #include <string>
 #include <vector>
@@ -15,11 +16,13 @@ namespace Soundux
             std::string name;
             std::string path;
 
+            std::vector<int> hotkeys;
             std::uint64_t modifiedDate;
-            std::vector<std::size_t> hotKeys;
         };
         struct Tab
         {
+            // TODO(curve) will be used later to move tabs
+            std::uint32_t id; //* Equal to index
             std::string name;
             std::string path;
 
@@ -28,18 +31,30 @@ namespace Soundux
 
         struct Settings
         {
+            // TODO(curve): Adjust deviceSettings & Audio::Devices when UI changes some settings
             std::vector<AudioDevice> deviceSettings;
-            std::vector<std::uint32_t> stopHotkey;
+            std::vector<int> stopHotkey;
             bool allowOverlapping;
-            bool tabHotKeysOnly;
+            bool tabHotkeysOnly;
             bool darkTheme;
         };
-        struct Data
+        class Data
         {
-            int width, height;
-            std::uint32_t output;
+          private:
             std::vector<Tab> tabs;
+
+          public:
+            int width, height;
+            std::string output; // TODO(curve): Make use of `output`
             std::uint32_t soundIdCounter;
+
+            std::vector<Tab> getTabs() const;
+            void setTabs(const std::vector<Tab> &);
+
+            void addTab(Tab);
+            void removeTabById(const std::uint32_t &);
+
+            std::optional<Sound> getSound(const std::uint32_t &);
         };
     } // namespace Objects
 } // namespace Soundux
\ No newline at end of file
diff --git a/src/core/hotkeys/linux/x11.cpp b/src/core/hotkeys/linux/x11.cpp
index a7e12b3..12f29f3 100644
--- a/src/core/hotkeys/linux/x11.cpp
+++ b/src/core/hotkeys/linux/x11.cpp
@@ -28,6 +28,10 @@ namespace Soundux::Objects
                 return;
             }
         }
+        else
+        {
+            Fancy::fancy.logTime() << "Using DISPLAY " << displayenv;
+        }
         display = x11Display;
 
         int major_op = 0, event_rtn = 0, ext_rtn = 0;
diff --git a/src/helper/audio/audio.cpp b/src/helper/audio/audio.cpp
index fb69b02..1aa7bba 100644
--- a/src/helper/audio/audio.cpp
+++ b/src/helper/audio/audio.cpp
@@ -23,6 +23,14 @@ namespace Soundux::Objects
                 defaultOutputDevice = &devices.at(device.name);
             }
         }
+
+        for (const auto &device : Globals::gSettings.deviceSettings)
+        {
+            if (devices.find(device.name) != devices.end())
+            {
+                devices.at(device.name).volume = device.volume;
+            }
+        }
     }
     Audio::~Audio()
     {
@@ -31,6 +39,11 @@ namespace Soundux::Objects
     std::optional<PlayingSound> Audio::play(const Objects::Sound &sound,
                                             const std::optional<Objects::AudioDevice> &playbackDevice)
     {
+        if (!Globals::gSettings.allowOverlapping)
+        {
+            stopAll();
+        }
+
         auto *decoder = new ma_decoder;
         auto res = ma_decoder_init_file(sound.path.c_str(), nullptr, decoder);
 
@@ -69,9 +82,9 @@ namespace Soundux::Objects
         pSound.sound = sound;
         pSound.rawDevice = device;
         pSound.rawDecoder = decoder;
-        // TODO(curve): This may only work on mp3s
         pSound.length = ma_decoder_get_length_in_pcm_frames(decoder);
-        pSound.id = ++idCounter;
+        pSound.lengthInSeconds = static_cast<int>(pSound.length / config.sampleRate);
+        pSound.id = ++Globals::gData.soundIdCounter;
 
         if (playbackDevice)
         {
@@ -306,4 +319,15 @@ namespace Soundux::Objects
 
         return playBackDevices;
     }
+    std::vector<PlayingSound> Audio::getPlayingSounds()
+    {
+        std::shared_lock lock(soundsMutex);
+        std::vector<PlayingSound> rtn;
+        for (const auto &sound : playingSounds)
+        {
+            rtn.push_back(sound.second);
+        }
+
+        return rtn;
+    }
 } // namespace Soundux::Objects
\ No newline at end of file
diff --git a/src/helper/audio/audio.hpp b/src/helper/audio/audio.hpp
index d70a597..8ca8e22 100644
--- a/src/helper/audio/audio.hpp
+++ b/src/helper/audio/audio.hpp
@@ -28,6 +28,7 @@ namespace Soundux
             ma_decoder *rawDecoder;
             long long length = 0;
             long long seekTo = 0;
+            int lengthInSeconds = 0;
             long long readFrames = 0;
 
             AudioDevice device;
@@ -38,7 +39,6 @@ namespace Soundux
         };
         class Audio
         {
-            std::uint32_t idCounter;
             std::shared_mutex soundsMutex;
             std::map<ma_device *, PlayingSound> playingSounds;
 
@@ -63,7 +63,7 @@ namespace Soundux
 
             float getVolume(const std::string &);
             std::vector<AudioDevice> getAudioDevices();
-            // std::vector<Objects::PlayingSound> getPlayingSounds();
+            std::vector<Objects::PlayingSound> getPlayingSounds();
 
             Audio();
             ~Audio();