diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
index a6510f0..e25402f 100644
--- a/.github/FUNDING.yml
+++ b/.github/FUNDING.yml
@@ -1,6 +1,6 @@
 # These are supported funding model platforms
 
-github: [jborza, jeremiahsb, mohangk]
+github: [jborza, jeremiahsb, mohangk, k0sm0naft]
 patreon: # Replace with a single Patreon username
 open_collective: # Replace with a single Open Collective username
 ko_fi: # Replace with a single Ko-fi username
diff --git a/abogen/domain/subtitle_generation.py b/abogen/domain/subtitle_generation.py
index 37ed0c6..7f6b9e7 100644
--- a/abogen/domain/subtitle_generation.py
+++ b/abogen/domain/subtitle_generation.py
@@ -274,16 +274,28 @@ def _process_regex_sentences(
                 current_sentence = []
                 word_count = 0
 
-    # Add any remaining tokens as a sentence
+    # Add any remaining tokens as a sentence (split multi-sentence FakeToken)
     if current_sentence:
         start_time = current_sentence[0]["start"]
         end_time = current_sentence[-1]["end"]
 
-        # Simplified text joining logic
         sentence_text = ""
         for t in current_sentence:
             sentence_text += t["text"] + (t.get("whitespace") or "")
-        subtitle_entries.append((start_time, end_time, sentence_text.strip()))
+        sentence_text = sentence_text.strip()
+
+        if len(current_sentence) == 1:
+            parts = re.split(rf"(?<={separator})\s+", sentence_text)
+            if len(parts) > 1:
+                d = end_time - start_time
+                for i, p in enumerate(parts):
+                    e = end_time if i == len(parts) - 1 else start_time + d * len(p) / len(sentence_text)
+                    subtitle_entries.append((start_time, e, p.strip()))
+                    start_time = e
+                current_sentence = []
+
+        if current_sentence:
+            subtitle_entries.append((start_time, end_time, sentence_text))
 
     # Fallback for last entry
     _apply_fallback_end_time(subtitle_entries, fallback_end_time)
diff --git a/abogen/hf_tracker.py b/abogen/hf_tracker.py
index 84c6350..73ae968 100644
--- a/abogen/hf_tracker.py
+++ b/abogen/hf_tracker.py
@@ -19,7 +19,7 @@ def tracked_hf_hub_download(*args, **kwargs):
     try:
         local_kwargs = dict(kwargs)
         local_kwargs["local_files_only"] = True
-        hf_hub_download(*args, **local_kwargs)
+        return hf_hub_download(*args, **local_kwargs)
     except Exception:
         repo_id = kwargs.get("repo_id", "<unknown repo>")
         filename = kwargs.get("filename", "<unknown file>")
diff --git a/abogen/pyqt/conversion.py b/abogen/pyqt/conversion.py
index a3ed659..3e480cf 100644
--- a/abogen/pyqt/conversion.py
+++ b/abogen/pyqt/conversion.py
@@ -1,6 +1,7 @@
 import os
 import time
 import hashlib  # For generating unique cache filenames
+from pathlib import Path
 from platformdirs import user_desktop_dir
 from PyQt6.QtCore import QThread, pyqtSignal, Qt, QTimer
 from PyQt6.QtWidgets import QCheckBox, QVBoxLayout, QDialog, QLabel, QDialogButtonBox
@@ -32,7 +33,7 @@ from abogen.domain.output_paths import (
 )
 from abogen.domain.audio_helpers import build_ffmpeg_command, to_float32
 from abogen.domain.audio_sink import open_audio_sink
-from abogen.domain.conversion_engine import synthesize_text, SynthParams, SegmentStats, SegmentInfo
+from abogen.domain.conversion_engine import run_tts_segment_loop, synthesize_text, SynthParams, SegmentStats, SegmentInfo
 from abogen.domain.intro_outro import resolve_intro, resolve_outro
 from abogen.domain.audio_buffer import (
     create_silence,
diff --git a/abogen/pyqt/gui.py b/abogen/pyqt/gui.py
index 6120a34..fca8c0f 100644
--- a/abogen/pyqt/gui.py
+++ b/abogen/pyqt/gui.py
@@ -842,7 +842,7 @@ class WordSubstitutionsDialog(QDialog):
             self,
         )
         instructions.setStyleSheet(
-            "padding: 10px; background-color: #f0f0f0; border-radius: 5px;"
+            f"padding: 10px; background-color: {COLORS['GREY_BACKGROUND']}; border-radius: 5px;"
         )
         instructions.setWordWrap(True)
         layout.addWidget(instructions)
diff --git a/abogen/pyqt/main.py b/abogen/pyqt/main.py
index 9e11c0c..437068a 100644
--- a/abogen/pyqt/main.py
+++ b/abogen/pyqt/main.py
@@ -46,6 +46,8 @@ except ImportError:
     print("PyQt6 not installed.")
 
 
+from abogen.utils import get_resource_path
+
 # Pre-load "libxcb-cursor" on Linux (fixes #101)
 if platform.system() == "Linux":
     arch = platform.machine().lower()
@@ -118,6 +120,8 @@ def qt_message_handler(mode, context, message):
         return  # Suppress this specific message
     if "setGrabPopup called with a parent, QtWaylandClient" in message:
         return
+    if "Failed to register with host portal" in message:
+        return
 
     if mode == QtMsgType.QtWarningMsg:
         print(f"Qt Warning: {message}")
diff --git a/abogen/spacy_utils.py b/abogen/spacy_utils.py
index d03e859..d2f331a 100644
--- a/abogen/spacy_utils.py
+++ b/abogen/spacy_utils.py
@@ -21,6 +21,19 @@ SPACY_MODELS = {
     Language.HI: "xx_sent_ud_sm",
 }
 
+# Kokoro single-letter codes -> Language enum (inverse of pipeline_factory._KOKORO_LANG_MAP)
+_KOKORO_TO_LANGUAGE = {
+    "a": Language.EN_US,
+    "b": Language.EN_GB,
+    "e": Language.ES,
+    "f": Language.FR,
+    "h": Language.HI,
+    "i": Language.IT,
+    "j": Language.JA,
+    "p": Language.PT_BR,
+    "z": Language.ZH,
+}
+
 
 def _load_spacy():
     """Lazy load spaCy module."""
@@ -61,11 +74,14 @@ def get_spacy_model(lang_code, log_callback=None):
 
     # Normalize to Language enum
     if not isinstance(lang_code, Language):
-        try:
-            lang_code = Language.from_str(lang_code)
-        except ValueError:
-            log(f"\nspaCy: Unknown language '{lang_code}'...")
-            return None
+        if isinstance(lang_code, str) and lang_code in _KOKORO_TO_LANGUAGE:
+            lang_code = _KOKORO_TO_LANGUAGE[lang_code]
+        else:
+            try:
+                lang_code = Language.from_str(lang_code)
+            except ValueError:
+                log(f"\nspaCy: Unknown language '{lang_code}'...")
+                return None
 
     # Check if model is cached
     if lang_code in _nlp_cache:
diff --git a/abogen/tts_plugin/loader.py b/abogen/tts_plugin/loader.py
index fa600ab..7c8baf1 100644
--- a/abogen/tts_plugin/loader.py
+++ b/abogen/tts_plugin/loader.py
@@ -12,7 +12,7 @@ The loader does NOT:
 
 from __future__ import annotations
 
-import importlib
+import importlib.util
 import re
 import sys
 import types
diff --git a/abogen/tts_plugin/plugin_manager.py b/abogen/tts_plugin/plugin_manager.py
index 1589d08..6789620 100644
--- a/abogen/tts_plugin/plugin_manager.py
+++ b/abogen/tts_plugin/plugin_manager.py
@@ -42,8 +42,11 @@ class PluginManager:
 
         plugins_path = Path(plugins_dir)
         if not plugins_path.exists():
-            self._loaded = True
-            return
+            if plugins_dir == "plugins":
+                plugins_path = Path(__file__).resolve().parent.parent.parent / "plugins"
+            if not plugins_path.exists():
+                self._loaded = True
+                return
 
         for entry in plugins_path.iterdir():
             if entry.is_dir() and (entry / "__init__.py").exists():
diff --git a/abogen/tts_plugin/utils.py b/abogen/tts_plugin/utils.py
index 0bbdb71..dd92431 100644
--- a/abogen/tts_plugin/utils.py
+++ b/abogen/tts_plugin/utils.py
@@ -179,6 +179,12 @@ class Pipeline:
 
         yield Segment(graphemes=text, audio=audio_array)
 
+    def load_single_voice(self, voice_name: str) -> Any:
+        engine_pipeline = getattr(self._engine, '_pipeline', None)
+        if engine_pipeline is not None and hasattr(engine_pipeline, 'load_single_voice'):
+            return engine_pipeline.load_single_voice(voice_name)
+        raise AttributeError(f"load_single_voice not available on {type(self._engine).__name__}")
+
     def dispose(self) -> None:
         if self._session is not None:
             try:
diff --git a/abogen/webui/routes/settings.py b/abogen/webui/routes/settings.py
index ba4ea07..975cad4 100644
--- a/abogen/webui/routes/settings.py
+++ b/abogen/webui/routes/settings.py
@@ -7,6 +7,7 @@ from flask import Blueprint, current_app, render_template, request, redirect, ur
 from flask.typing import ResponseReturnValue
 
 from abogen.webui.routes.utils.settings import (
+    load_integration_settings,
     load_settings,
     save_settings,
     SAVE_MODE_LABELS,