[mindonstrike]

It does seem a bit unnerving having part of my desktop momentarilty disappear, but I believe this is in response to a problem many of us had where if you skipped to the next song at just the right time, with certain brands, your new songs graphics could get messed up and you had to exit and restart hoster to fix them. So now hoster refreshes the screen before starting any songs to alleviate that problem.
If it's a major distraction for you I think you can double click the singers screen to put it on your desktop, resize it to a smaller square (becareful not to shrink it till it disappears) and put it somewhere unobtrusive. Double click again and you're back in business.

Sam