As DragonII said, use the Controls tab. The hotkeys that work from the Game Window (when the Settings Window is closed) also work when the Settings Window is open and the Controls tab is displayed. They DON'T work on other tabs because they could interfere with other input to the program.
Phaze: there was never a Merge button/feature on the Database tab. Now, I *have* considered a merge feature whereby two database players could be merged into one. The logic is simple: One of the players would be deleted, and the other player would have multiple internal IDs (he would keep his original ID and also gain the ID of the deleted player). This would mean that even though a player has a different internal ID in two different tournament files, they would still be identified as the same database player. Much easier than going through each tournament file and merging the players (if you have a lot of tournament files). But there is a lot more coding under the hood to make this work, and it just doesn't happen often enough to justify the work (relative to other stuff to be done with the software). Yet.
FYI Radium: using the latest version of the software, you can print directly from the "Export" feature on the Game tab. I've been slowing adding the print capability to various parts of the software as releases are done. Haven't gotten to the Stats export yet, but will eventually...