Using a common start time, you must also make sure that it is sufficiently long enough to allow all of the sounds to download before starting. Therefore, you might want to test your world on the modem speed of your projected audience (14.4? T1?) in order to get an idea of the best length to choose. For that reason, a common sensor is an attractive method, eliminating the potential for miscues.
Also, when synchronizing loops, make sure that all of the sounds in the set are exactly the same length in time. Otherwise, they will all be out of sync after the first time through the loop.
In this example, we have three nodes that are set up so you can hear one, two, or all three sounds at once to see how it affects your CPU cycles.
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