Windows support

.saratag/Core.py

@@ -59,6 +59,9 @@ SaraTagRecordsPath = ApplicationDirectory / ".SaraTagRecords.toml"
 SaraTagHistoryPath = ApplicationDirectory / ".SaraTagHistory.toml"
 
 
+# Empty means the default app; Windows rarely has mpv.
+DefaultVideoPlayer = "" if sys.platform == "win32" else "mpv"
+
 DefaultSaraTagConf = f'''# SaraTag's main portable configuration file.
 # Paths in this file are interpreted relative to the SaraTag directory
 # unless they are absolute.
@@ -83,7 +86,7 @@ ShowInvalidEntries = true
 ShowImagePreviews = true
 
 [Media]
-VideoPlayer = "mpv"
+VideoPlayer = "{DefaultVideoPlayer}"
 
 [History]
 Enabled = true