Not to shoot you down or anything, but why not cut and crop one of the bleeps off of one of the existing files in the stu.VP, add it to your own file, then do the same thing with the static noise at the end of the file? Since this ties into the original freespace story, it'd seem kinda odd if all the ship's communicators made wildly different noises than before -- Or is this not ok according to copyrights? (being dead serious here....)
Another thing to consider, I was listening to the "personas" last night from FS1. They tacked on the bleep and static after each voice file, so each file consists of *bleep* message *static*. FS2's files were just pure voice, with no bleeps or static. I think either they didnt exist, or they use seperate files for bleeps and static.