You need to specify your conditions on which each sound will play for example:
Trigger:
The Clock Ticks
Conditions:
isRound and (smallBlind = 100) and (bigBlind = 200) and (secondsElapsed = 2) and (state = 2) and (roundNum > 1)
or
Trigger:
The Clock Ticks
Conditions:
(not isRound) and (secondsElapsed = 1) and (state = 2)
so isRound is the one you are probably needing to enter, notice the first one is true the second false as the second conditions are for a break.
smallBlind, bigBlind and secondsElapsed are straight forward, (don't use secondsElapsedif the trigger is (A Level Starts)
state = 2 (during tournament), = 0 before, = 1 countdown, = 3 end of tournament
With the correct conditions your events will only fire when you want them to
Regards
Stuart