Hitachi Ex Hitachi DVD Cam Converting Files To PC Problem?

Hitachi DVD Cam Converting Files to PC problem? - hitachi ex

**** When I save things with my recorder MV580A Hitachi DZ-CAM, I have several files on my SD disc. ex. Make a recording, stop recording, the recording again ... Now I have two files .. My question is, when access to these files on my PC, its place in a file. So my 3 minutes to five separate registrations are now 15 long minutes of video in Windows Media Player .. How can I delete these files? or a burden both on the PC? ---- Thanks