diff --git a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/MerLTLReader.kt b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/MerLTLReader.kt
index 0e38330..0761bb0 100644
--- a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/MerLTLReader.kt
+++ b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/MerLTLReader.kt
@@ -1,37 +1,75 @@
 package jp.zero_x_d.workaholic.merltlreader
 
-import jp.zero_x_d.workaholic.merltlreader.app.CLIApp
-import jp.zero_x_d.workaholic.merltlreader.app.ILTLReaderApp
+import com.sys1yagi.mastodon4j.api.entity.Status
+import javafx.application.Application
 import jp.zero_x_d.workaholic.merltlreader.app.guifallback.GUIApp
+import jp.zero_x_d.workaholic.merltlreader.engine.ITTSEngine
+import jp.zero_x_d.workaholic.merltlreader.status.readContent
+import jp.zero_x_d.workaholic.merltlreader.status.readName
 import net.harawata.appdirs.AppDirsFactory
+import org.luaj.vm2.LuaError
 import java.io.File
 
 
 object MerLTLReader {
     val appName = "MerLTLReader"
     private val appVersion = "alpha"
-    private val appAuthor = "called.0xd"
+    private val appAuthor = "called_D"
 
-    private var instance: ILTLReaderApp? = null
-    val appInstance: ILTLReaderApp
-        get() = requireNotNull(instance)
+    val appDir by lazy {
+        AppDirsFactory
+                .getInstance()
+                .getUserConfigDir(appName, appVersion, appAuthor)
+                .let {
+                    File(it).apply { if (!exists()) mkdirs() }
+                }
+    }
 
-    val preferences: Preferences
-        get() = requireNotNull(appInstance?.preferences)
+    var preferences: Preferences? = null
 
+    val onStatus = mutableListOf<(Status) -> Unit>({ status ->
+        println(status.readContent)
+    })
 
-    val appDir by lazy {
-        AppDirsFactory.getInstance().getUserConfigDir(appName, appVersion, appAuthor).let {
-            File(it).apply { if (!exists()) mkdirs() }
+    @JvmStatic fun main(args: Array<String>) {
+        preferences = Preferences.fromArgs(*args)
+        if (System.console() == null) {
+            Application.launch(GUIApp::class.java, *args)
+        } else {
+            launch(*args)
         }
     }
 
-    @JvmStatic fun main(arg: Array<String>) {
-        instance = if (System.console() != null) {
-            CLIApp()
-        } else { // Fallback code
-            GUIApp()
+    private fun launch(vararg arg: String) {
+        val credentials =
+                Credentials.Builder(preferences!!)
+                        .loadOrAppRegister().loadOrLogin {
+                    mailPass = login(preferences)
+                }
+        val tl = Timeline(credentials)
+        val tts = ITTSEngine.getEngineFromPreferences(preferences!!)
+
+        runWithTTS(tl, tts)
+    }
+
+    fun runWithTTS(tl: Timeline, tts: ITTSEngine) {
+        for (status in tl) {
+            try {
+                onStatus.forEach { it(status) }
+                status.readName?.let { tts.say_username(it) }
+                status.readContent?.let { tts.say_content(it) }
+            } catch (e: LuaError) {
+                e.printStackTrace()
+                tts.say("るあえらーが発生しました")
+            }
         }
-        instance!!.launch(*arg)
+    }
+
+    private fun login(preferences: Preferences): LoginData {
+        print("login for " + preferences.instance_url)
+        val console = requireNotNull(System.console())
+        val mail = console.readLine("mail: ")?.toString()
+        val pass = console.readPassword("password for %s: ", mail)?.toString()
+        return LoginData(requireNotNull(mail), requireNotNull(pass))
     }
 }
diff --git a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/Preferences.kt b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/Preferences.kt
index 6c901a1..bcfaa84 100644
--- a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/Preferences.kt
+++ b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/Preferences.kt
@@ -3,13 +3,25 @@ package jp.zero_x_d.workaholic.merltlreader
 import com.sys1yagi.mastodon4j.api.Scope
 import java.io.File
 import jp.zero_x_d.workaholic.merltlreader.MerLTLReader.appDir
+import jp.zero_x_d.workaholic.merltlreader.engine.ITTSEngine.Engines
 
 data class Preferences(
         val instance_url: String,
-        val scope: Scope = Scope(Scope.Name.ALL)
+        val scope: Scope = Scope(Scope.Name.ALL),
+        val tts_engine: Engines = Engines.AUTO
 ) {
     val dir: File
         get() = File(appDir, instance_url).apply {
             if (!exists()) mkdir()
         }
+
+    companion object {
+        fun fromArgs(vararg args: String): Preferences {
+            // TODO process args for preferences
+
+            return Preferences(
+                    "mstdn-workers.com"
+            )
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/CLIApp.kt b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/CLIApp.kt
deleted file mode 100644
index 312e067..0000000
--- a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/CLIApp.kt
+++ /dev/null
@@ -1,26 +0,0 @@
-package jp.zero_x_d.workaholic.merltlreader.app
-
-import com.sys1yagi.mastodon4j.api.entity.Status
-import jp.zero_x_d.workaholic.merltlreader.LoginData
-import jp.zero_x_d.workaholic.merltlreader.Preferences
-import jp.zero_x_d.workaholic.merltlreader.status.readContent
-
-class CLIApp: ILTLReaderApp {
-    override var preferences: Preferences? = null
-
-
-    override fun launch(vararg args: String) {
-        run(*args)
-    }
-
-    override fun login(): LoginData {
-        val console = requireNotNull(System.console())
-        val mail = console.readLine("mail: ")?.toString()
-        val pass = console.readPassword("password for %s: ", mail)?.toString()
-        return LoginData(requireNotNull(mail), requireNotNull(pass))
-    }
-
-    override fun onStatus(stats: Status) {
-        println(stats.readContent)
-    }
-}
\ No newline at end of file
diff --git a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/ILTLReaderApp.kt b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/ILTLReaderApp.kt
deleted file mode 100644
index ea32254..0000000
--- a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/ILTLReaderApp.kt
+++ /dev/null
@@ -1,41 +0,0 @@
-package jp.zero_x_d.workaholic.merltlreader.app
-
-import com.sys1yagi.mastodon4j.api.entity.Status
-import jp.zero_x_d.workaholic.merltlreader.*
-import jp.zero_x_d.workaholic.merltlreader.engine.ITTSEngine
-import jp.zero_x_d.workaholic.merltlreader.engine.JTalkConnecter
-import jp.zero_x_d.workaholic.merltlreader.status.readContent
-import jp.zero_x_d.workaholic.merltlreader.status.readName
-import org.luaj.vm2.LuaError
-
-
-interface ILTLReaderApp {
-    var preferences: Preferences?
-
-    fun login(): LoginData
-    fun launch(vararg args: String): Unit
-
-    fun onStatus(stats: Status) {}
-
-    fun run(vararg args: String) {
-        preferences = Preferences("mstdn-workers.com")
-        val credentials =
-                Credentials.Builder(preferences!!)
-                        .loadOrAppRegister().loadOrLogin {
-                    mailPass = login()
-                }
-
-        val tl = Timeline(credentials)
-        val tts_engine: ITTSEngine = JTalkConnecter(emptyMap())
-        for (status in tl) {
-            try {
-                onStatus(stats = status)
-                status.readName?.let { tts_engine.say_username(it) }
-                status.readContent?.let { tts_engine.say_content(it) }
-            } catch (e: LuaError) {
-                e.printStackTrace()
-                tts_engine.say("るあえらーが発生しました")
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/guifallback/GUIApp.kt b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/guifallback/GUIApp.kt
index ac19a24..eb632a3 100644
--- a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/guifallback/GUIApp.kt
+++ b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/app/guifallback/GUIApp.kt
@@ -1,61 +1,53 @@
 package jp.zero_x_d.workaholic.merltlreader.app.guifallback
 
-import com.sys1yagi.mastodon4j.api.entity.Status
 import javafx.application.Application
 import javafx.application.Platform
 import javafx.scene.Scene
 import javafx.scene.control.TextArea
 import javafx.scene.layout.StackPane
 import javafx.stage.Stage
-import jp.zero_x_d.workaholic.merltlreader.LoginData
-import jp.zero_x_d.workaholic.merltlreader.MerLTLReader
-import jp.zero_x_d.workaholic.merltlreader.Preferences
-import jp.zero_x_d.workaholic.merltlreader.app.ILTLReaderApp
+import jp.zero_x_d.workaholic.merltlreader.*
+import jp.zero_x_d.workaholic.merltlreader.engine.ITTSEngine
 import jp.zero_x_d.workaholic.merltlreader.status.readContent
 import kotlin.concurrent.thread
 
+class GUIApp: Application() {
+    override fun start(primaryStage: Stage) {
+        Platform.setImplicitExit(true)
+        val root = StackPane()
+        val scene = Scene(root, 640.0, 480.0)
+        var logArea = TextArea().apply {
+            textProperty().addListener { _ ->
+                scrollTop = Double.MAX_VALUE
+            }
+        }
 
-private var logArea: TextArea? = null
+        MerLTLReader.onStatus += { status ->
+            logArea?.appendText(status.readContent + "\n")
+        }
 
-class GUIApp: ILTLReaderApp {
-    override var preferences: Preferences? = null
+        root.children.add(logArea)
+        primaryStage.scene = scene
 
-    override fun login(): LoginData {
-        val dialog = LoginDialog(MerLTLReader.preferences)
-        val result = dialog.showAndWait()
-        return requireNotNull(result)
-    }
-
-    override fun launch(vararg args: String) {
-        Application.launch(FXApp::class.java, *args)
-    }
+        primaryStage.setOnCloseRequest { e ->
+            Platform.exit()
+            println("close")
+            // TODO あとできちんとInterruptする
+            System.exit(0)
+        }
+        primaryStage.show()
 
-    class FXApp: Application() {
-        override fun start(primaryStage: Stage) {
-            val root = StackPane()
-            val scene = Scene(root, 640.0, 480.0)
-            logArea = TextArea().apply {
-                textProperty().addListener { _ ->  
-                    scrollTop = Double.MAX_VALUE
+        val credentials =
+                Credentials.Builder(MerLTLReader.preferences!!)
+                        .loadOrAppRegister().loadOrLogin {
+                    val dialog = LoginDialog(preferences)
+                    mailPass = requireNotNull(dialog.showAndWait())
                 }
-            }
-            root.children.add(logArea)
-            primaryStage.scene = scene
-            thread {
-                MerLTLReader.appInstance.run(*parameters.raw.toTypedArray())
-            }
-            primaryStage.setOnCloseRequest { e ->
-                Platform.exit()
-                println("close")
-                // TODO あとできちんとInterruptする
-                System.exit(0)
-            }
-            primaryStage.show()
-        }
-    }
 
-    override fun onStatus(stats: Status) {
-        logArea?.appendText(stats.readContent + "\n")
-        println(stats.readContent)
+        thread {
+            val tl = Timeline(credentials)
+            val tts = ITTSEngine.getEngineFromPreferences(MerLTLReader.preferences!!)
+            MerLTLReader.runWithTTS(tl, tts)
+        }
     }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/BouyomiConnecter.kt b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/BouyomiConnecter.kt
index 6c05b01..8275938 100644
--- a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/BouyomiConnecter.kt
+++ b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/BouyomiConnecter.kt
@@ -1,11 +1,26 @@
 package jp.zero_x_d.workaholic.merltlreader.engine
 
 import org.snowink.bouyomichan.BouyomiChan4J
+import java.net.ConnectException
+import java.net.Socket
 
 /**
  * Created by jun on 2017/07/01.
  */
 class BouyomiConnecter(val engine_params: Map<String, Any>): ITTSEngine {
+    override fun test(): Boolean {
+        var socket: Socket? = null
+        try {
+            socket = Socket(
+                    BouyomiChan4J.DEFAULT_BOUYOMI_HOST,
+                    BouyomiChan4J.DEFAULT_BOUYOMI_PORT)
+        } catch (_: ConnectException) {
+            return false
+        } finally {
+            socket?.close()
+        }
+        return true
+    }
 
     private val b4j = BouyomiChan4J()
 
diff --git a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/ITTSEngine.kt b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/ITTSEngine.kt
index 02ccc56..9fc5c27 100644
--- a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/ITTSEngine.kt
+++ b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/ITTSEngine.kt
@@ -1,10 +1,44 @@
 package jp.zero_x_d.workaholic.merltlreader.engine
 
+import jp.zero_x_d.workaholic.merltlreader.Preferences
+
 /**
  * Created by D on 17/06/20.
  */
 interface ITTSEngine {
+    fun test(): Boolean
     fun say(readtext: String)
     fun say_username(username: String)
     fun say_content(content: String)
+
+    enum class Engines {
+        JTALK,
+        BOUYOMI,
+        AUTO
+    }
+
+    private object SilentEngine: ITTSEngine {
+        override fun test(): Boolean = true
+        override fun say(readtext: String) {}
+        override fun say_username(username: String) {}
+        override fun say_content(content: String) {}
+    }
+
+    companion object {
+        fun getEngineFromPreferences(preferences: Preferences): ITTSEngine {
+            return when(preferences.tts_engine) {
+                ITTSEngine.Engines.JTALK -> JTalkConnecter(emptyMap())
+                ITTSEngine.Engines.BOUYOMI -> BouyomiConnecter(emptyMap())
+                Engines.AUTO -> autoSelect()
+            }
+        }
+
+        private fun autoSelect(): ITTSEngine {
+            return listOf(
+                    JTalkConnecter(emptyMap()),
+                    BouyomiConnecter(emptyMap()),
+                    SilentEngine
+            ).filter { it.test() }.first()
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/JTalkConnecter.kt b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/JTalkConnecter.kt
index 5c8c607..1b207be 100644
--- a/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/JTalkConnecter.kt
+++ b/src/main/kotlin/jp/zero_x_d/workaholic/merltlreader/engine/JTalkConnecter.kt
@@ -1,7 +1,9 @@
 package jp.zero_x_d.workaholic.merltlreader.engine
 
+import org.snowink.bouyomichan.BouyomiChan4J
 import java.io.OutputStreamWriter
 import java.io.PrintWriter
+import java.net.ConnectException
 import java.net.Socket
 
 /**
@@ -15,9 +17,25 @@ class JTalkConnecter(val engine_params: Map<String, Any>): ITTSEngine {
     val content_voice_params = mapOf(
             "Voice" to "mei",
             "Speed" to 1.9)
+    val DEFAULT_JTALK_HOST = "localhost"
+    val DEFAULT_JTALK_PORT = 8000
+
+    override fun test(): Boolean {
+        var socket: Socket? = null
+        try {
+            socket = Socket(
+                    DEFAULT_JTALK_HOST,
+                    DEFAULT_JTALK_PORT)
+        } catch (_: ConnectException) {
+            return false
+        } finally {
+            socket?.close()
+        }
+        return true
+    }
 
     private fun say(readtext: String, params: Map<String, Any>) {
-        val socket = Socket("localhost", 8000);
+        val socket = Socket(DEFAULT_JTALK_HOST, DEFAULT_JTALK_PORT)
 
         val output = socket.getOutputStream()
         val input = socket.getInputStream()
diff --git a/src/main/kotlin/org/snowink/bouyomichan/BouyomiChan4J.kt b/src/main/kotlin/org/snowink/bouyomichan/BouyomiChan4J.kt
index 9dc6c08..4247717 100644
--- a/src/main/kotlin/org/snowink/bouyomichan/BouyomiChan4J.kt
+++ b/src/main/kotlin/org/snowink/bouyomichan/BouyomiChan4J.kt
@@ -140,8 +140,8 @@ class BouyomiChan4J(
     }
 
     companion object {
-        private val DEFAULT_BOUYOMI_HOST = "localhost"
-        private val DEFAULT_BOUYOMI_PORT = 50001
+        val DEFAULT_BOUYOMI_HOST = "localhost"
+        val DEFAULT_BOUYOMI_PORT = 50001
     }
 
 }
\ No newline at end of file