diff --git a/include/platformdep/audio.h b/include/platformdep/audio.h
index bc8e363..5c4ccd7 100644
--- a/include/platformdep/audio.h
+++ b/include/platformdep/audio.h
@@ -3,7 +3,6 @@
 
 #include <utils/str.h>
 
-void play_audio_sync(s8 filepath);
 void play_audio_async(s8 filepath);
 
 #endif // AUDIO_H
diff --git a/src/jppron/jppron.c b/src/jppron/jppron.c
index ef3860e..85e4524 100644
--- a/src/jppron/jppron.c
+++ b/src/jppron/jppron.c
@@ -45,27 +45,6 @@ static void process_audio_subdirectory(const char *audio_dir_path, char *subdir_
         dbg("Index file of folder '%s' not existing or not accessible", subdir_name);
 }
 
-static void jppron_create_database(const char *audio_dir_path, s8 dbpth) {
-    jdb_remove(dbpth);
-    createdir(dbpth);
-
-    _drop_(jppron_close_db) PronDatabase *db = jppron_open_db(false);
-
-    _drop_(closedir) DIR *audio_dir = opendir(audio_dir_path);
-    err_ret_on(!audio_dir, "Failed to open audio directory '%s': %s", audio_dir_path,
-               strerror(errno));
-
-    struct dirent *entry;
-    while ((entry = readdir(audio_dir)) != NULL) {
-        s8 fn = fromcstr_(entry->d_name);
-
-        if (s8equals(fn, S(".")) || s8equals(fn, S("..")))
-            continue;
-
-        process_audio_subdirectory(audio_dir_path, entry->d_name, db);
-    }
-}
-
 static s8 normalize_reading(s8 reading) {
     s8 r = s8dup(reading);
     kata2hira(r);
diff --git a/src/platformdep/audio.c b/src/platformdep/audio.c
index 40c1405..b4c2e24 100644
--- a/src/platformdep/audio.c
+++ b/src/platformdep/audio.c
@@ -4,16 +4,6 @@
 #include "utils/messages.h"
 #include <utils/str.h>
 
-void play_audio_sync(s8 filepath) {
-    _drop_(frees8) s8 cmd =
-        concat(S("ffplay -nodisp -nostats -hide_banner -autoexit '"), filepath, S("'"));
-
-    g_autoptr(GError) error = NULL;
-    g_spawn_command_line_sync((char *)cmd.s, NULL, NULL, NULL, &error);
-    if (error)
-        err("Failed to play file %s: %s", (char *)filepath.s, error->message);
-}
-
 static void child_watch_cb(GPid pid, gint status, gpointer user_data) {
     g_spawn_close_pid(pid);
 }