You can now find a link to the R5 version in the download section.
This version include some fixes, more themes and some sound effects.
The sound can be changed by replacing the files by another one with the same name.
The sound file must be in ".wav" format for SliderDock to read it.
One of the fix should repair the bug where icons are cut out when sliderdock is resized,
but since this bug is screen dpi dependent I'm not 100% sure that it is completely fixed.
If anyone who could see this bug in precedent version, test the R5 and report back if it indeed fix this bug for them or not, I would appreciate it.