@kenanmd_2004 Just to check, if the problem is really tied to the Online Player - do you get the same effect when you install your soundsets in the regular player app? I don’t have the Online Player around, so I would love to help checking for other things, that might have gone wrong.
When looking at the SWFD Custom Voice TRACKS soundset, all the oneshot elements have a distance from 0 to 10, therefore are being played in a random distance. It can easily happen, that they play to softly when a far away distance is chosen. You get better results, when you put in a distance of 0 for things like this. When you choose the music subtype, all the directional glory is stripped from the playback, hence you have a stereo output, that is loud and clear. As I said, I have to check with the Online player to be a 100% sure, l about this. But that’s why the samples sound “right” when being used as music elements.
One other thing (not really related) - the announcements themselves are supercool. What you could try (you added a reverb manually, right?) - let Syrinscape take over the reverb and try different settings in the creator. Different reverb settings have a tremendous effect on how the sample is played. When using reverb on the original sample, you strip yourself of the possibility to use the sample elsewhere.