[Roy Dennis]

First thing what are your settings In Tools/settings/Audio ?
Do you have the computers native audio card selected as the playback card or some other card ?
What is the Prevent audio dropouts set to ?
10 is the default, 1 would most likely cause audio dropouts 20 gives most reliable sound but slows the reaction down for key & tempo change so if you have it set less than 10 that would likely cause problems.
There are two other boxes at the bottom to change priority of audio or lyrics you could esperiment with these but they to me are the least likely to cause problems.
Fresh thoughts on this, As you said in your first post you have this sound problem even when you install Hoster on your other computer, I wonder if there is another program running on both computers that Hoster is incompatible with. First that springs to mind is your spyware or malware.
Is it the same on both computers ?

If so can you try turning it off just while you run Hoster just long enough to test it. (make sure your Offline while doing this). If it does run OK when disabled I should see if there are any settings in the software to allow specific programs to run.

If that makes no difference I should turn your attention to other software that you have loaded common to both computers and try either preventing them running or uninstall them tempory until hopefully you find a culprit.

If none of the above helps I should put in a support ticket.