How to play a sound right after another sound has ended?

I can’t guarantee this by checking if the sound was stopped in my program because the sounds are processed in different threads, isn’t that so?

Thus, the problem arises when I want to be 100% sure that as soon as the sound stops playing, a new sound will immediately begin after it without any delays.

The second sound will be a cyclic type of sound, so I cannot just glue the two sounds together.

How can i do this?