The VLC client is "barebones" - even simple functionality like adjusting the volume is missing. If the network connection drops, the chromecast stops playing (regular chromecast would continue). There is no support for subtitles, alternate audio/video tracks, audio effects, video playback speed, or pretty much anything else.
Seeking is supported tho, as are audio-only files.
Seeking is supported tho, as are audio-only files.