Hey DeadKeys
If you are starting a new song and want the samples from another song you've done, just load that song and save it into another slot.. it'll bring all the samples with it. Then you can just go into the sequences and under the SongUtil (or something like that) you can clear the song out.
You can also use the Clipboard to move samples around. I know for sure within a song but not fully sure if you can do it between songs.
Good luck!