Live Streaming is only available to eligible customers. To watch live sport and selected racing, all you need is a funded account or to have placed a bet in the last 24 hours. To watch any other racing, you must place a qualifying bet of at least 0.50 win or 0.25 Each-Way (or currency equivalent).
The term bet  can be used in a few different ways, but generally means "agreed" or "okay". For example, if someone says "Wanna grab lunch later?" and the other person responds "Bet", it means they agree to the plan. Bet" can also be used as a response to confirm that a statement is true.