SVVideo

Fixed video and music volume handling in the mod. Mod audio now follows Minecraft’s Music volume slider. Added new command: /svvideo vanillasounds on|off. Added new /svvideo music file command to play audio directly from server files. /svvideo playblock now supports custom video volume control. Added loading placeholders for videos, music, and video blocks. Fixed issues with file mode. Playback now properly stops with stop and no longer remains looping.