Sinusbot is a bot you host yourself to play music in your teamspeak 3 server. It allows you to upload music to a web interface, group it and play it with multiple bots in chosen channels on the teamspeak server. It also provides information about the people on the server and where they are in their api.
Their website
Although the project is closed source they have a well documented RESTful API I previously used to build myself a personal alexa integration for my own bot.
Api Doc is here