diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 0000000..fbc626b
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,44 @@
+cmake_minimum_required(VERSION 3.16)
+
+set(CMAKE_C_STANDARD 17)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+project(ossp)
+
+find_package(CURL REQUIRED)
+find_package(OpenSSL REQUIRED)
+find_package(Qt6 REQUIRED COMPONENTS Core Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(ossp
+    main.c
+    gui/gui_entry.cpp
+    gui/window.cpp
+    gui/songWidget.cpp
+    configHandler.c
+    libopensubsonic/crypto.c
+    libopensubsonic/httpclient.c
+    libopensubsonic/logger.c
+    libopensubsonic/utils.c
+    libopensubsonic/scrobble_lastFm.c
+    libopensubsonic/scrobble_listenBrainz.c
+    libopensubsonic/endpoint_getAlbum.c
+    libopensubsonic/endpoint_getAlbumList.c
+    libopensubsonic/endpoint_getArtist.c
+    libopensubsonic/endpoint_getArtists.c
+    libopensubsonic/endpoint_getLyricsBySongId.c
+    libopensubsonic/endpoint_getPlaylist.c
+    libopensubsonic/endpoint_getPlaylists.c
+    libopensubsonic/endpoint_getSong.c
+    libopensubsonic/endpoint_getStarred.c
+    libopensubsonic/endpoint_ping.c
+    libopensubsonic/endpoint_scrobble.c
+    external/cJSON.c
+    external/cJSON_Utils.c
+    external/libcurl_uriescape.c
+    external/md5.c
+)
+
+target_link_libraries(ossp PRIVATE OpenSSL::SSL OpenSSL::Crypto CURL::libcurl Qt6::Core Qt6::Widgets)
diff --git a/src/main.c b/src/main.c
index d39ed0b..f059a81 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include "gui/gui_entry.hpp"
 #include "libopensubsonic/logger.h"
 #include "libopensubsonic/crypto.h"
 #include "libopensubsonic/httpclient.h"
@@ -7,26 +9,117 @@
 #include "configHandler.h"
 
 configHandler_config_t* configObj = NULL;
+int checkConfigFile();
+int validateConnection();
 
-int main() {
+int main(int argc, char** argv) {
     int rc = 0;
 
+    // Read config file
     rc = configHandler_Read(&configObj);
     if (rc != 0) {
         printf("Could not read config file!\n");
         return 1;
     }
+
+    // Run check on the config file
+    rc = checkConfigFile();
+    if (rc != 0) {
+        return 1;
+    }
+
+    // Generate opensubsonic login
     opensubsonic_crypto_generateLogin();
 
-    opensubsonic_httpClient_URL_t* url = malloc(sizeof(opensubsonic_httpClient_URL_t));
-    opensubsonic_httpClient_URL_prepare(&url);
-    url->endpoint = OPENSUBSONIC_ENDPOINT_PING;
-    opensubsonic_httpClient_formUrl(&url);
-    printf("URL: %s\n", url->formedUrl);
-    opensubsonic_ping_struct* OSS_ping_struct;
-    opensubsonic_httpClient_fetchResponse(&url, (void**)&OSS_ping_struct);
-    printf("PING OK: %s\n", OSS_ping_struct->status);
+    // Check the config for the newly generated crypto salt/token
+    if (configObj->internal_opensubsonic_loginSalt == NULL ||
+        configObj->internal_opensubsonic_loginToken == NULL) {
+        printf("Internal Failure: Could not generate OpenSubsonic Login Salt/Token.\n");
+        return 1;
+    }
 
+    // Attempt connection
+    rc = validateConnection();
+    if (rc != 0) {
+        return 1;
+    }
+
+    // Launch QT frontend
+    qt_gui_entry(argc, argv);
+
+    // Cleanup and exit
     configHandler_Free(&configObj);
     return 0;
 }
+
+int checkConfigFile() {
+    // Check for OpenSubsonic username and password
+    if (strlen(configObj->opensubsonic_username) == 0 ||
+        strlen(configObj->opensubsonic_password) == 0) {
+        printf("OpenSubsonic username/password is empty.\n");
+        return 1;
+    }
+
+    // Check for OpenSubsonic protocol and server
+    if (strlen(configObj->opensubsonic_protocol) == 0 ||
+        strlen(configObj->opensubsonic_server) == 0) {
+        printf("OpenSubsonic protocol/server is empty.\n");
+        return 1;
+    }
+
+    // Check for ListenBrainz scrobble config
+    if (configObj->listenbrainz_enable) {
+        if (strlen(configObj->listenbrainz_token) == 0) {
+            printf("ListenBrainz scrobbling is enabled, but token is empty.\n");
+            return 1;
+        }
+    }
+
+    // Check for LastFM scrobble config
+    if (configObj->lastfm_enable) {
+        if (strlen(configObj->lastfm_username) == 0 ||
+            strlen(configObj->lastfm_password) == 0) {
+            printf("LastFM scrobbling is enabled, but username/password is empty.\n");
+            return 1;
+        }
+        if (strlen(configObj->lastfm_api_key) == 0 ||
+            strlen(configObj->lastfm_api_secret) == 0) {
+            printf("LastFM scrobbling is enabled, but API key/secret is empty.\n");
+            return 1;
+        }
+        if (strlen(configObj->lastfm_api_session_key) == 0) {
+            printf("LastFM scrobbling is enabled, but API session key is empty.\n");
+            return 1;
+        }
+    }
+
+    return 0;
+}
+
+int validateConnection() {
+    printf("Attempting to connect to /ping at %s://%s...\n", configObj->opensubsonic_protocol, configObj->opensubsonic_server);
+    opensubsonic_httpClient_URL_t* pingUrl = malloc(sizeof(opensubsonic_httpClient_URL_t));
+    opensubsonic_httpClient_URL_prepare(&pingUrl);
+    pingUrl->endpoint = OPENSUBSONIC_ENDPOINT_PING;
+    opensubsonic_httpClient_formUrl(&pingUrl);
+    opensubsonic_ping_struct* OSS_ping_struct;
+    opensubsonic_httpClient_fetchResponse(&pingUrl, (void**)&OSS_ping_struct);
+
+    if (!OSS_ping_struct->error) {
+        printf("Connection to %s://%s successful.\n", configObj->opensubsonic_protocol, configObj->opensubsonic_server);
+        printf("Server: %s %s.\n", OSS_ping_struct->serverType, OSS_ping_struct->serverVersion);
+    } else {
+        printf("Connection to %s://%s failed:\n", configObj->opensubsonic_protocol, configObj->opensubsonic_server);
+        printf("Code %d - %s\n", OSS_ping_struct->errorCode, OSS_ping_struct->errorMessage);
+    }
+
+    if (!OSS_ping_struct->error) {
+        opensubsonic_ping_struct_free(&OSS_ping_struct);
+        opensubsonic_httpClient_URL_cleanup(&pingUrl);
+        return 0;
+    } else {
+        opensubsonic_ping_struct_free(&OSS_ping_struct);
+        opensubsonic_httpClient_URL_cleanup(&pingUrl);
+        return 1;
+    }
+}