Suddenly every times i stop recrding for a moment, it starts a new track when i restart. How can i keep it on one track? Windows 7

They all do that.

You can Pause instead of Stop with the P key. P to resume. This one can be messy, because you can’t do Effects or Filters from Pause, only Stop. So don’t forget!

If you do Stop, you can Append Record, Shift-R. That will always jam the new work on the end of the old.