First try --format=bestaudio, if that fails try --format=best and if that fails as well, just pass the URL as-is to VLC. Very fault tolerant and silently ignores errors (except for letting it show up in the logs)...
If the first connection to the query interface fails, the app didn't try to connect again afterwards because it assumed that the process has been aborted intentionally.
- TS3Bot is able to play any link that VLC supports via the "play" command, just add any URI as an argument to that command.
- TS3Bot is able to stop the currently playing media via the "stop" command.
- TS3Bot is able to change its own nickname via the "changenick" command.