. . . . . Why does a microphone recording (or others) cut off and stop prematurely during recording session?You can set a record range using the blue bar above the 1st track. . . . .
To record more than the range setting do not set a range at all - to remove a range double click the blue bar.
Recording will then continue for as long as you have free disc space.
It took me a while (years actually, to be honest), to figure out that my recordings were being stopped by the range settings. Great tip on simply removing the range bar from the equation.