I just downloaded Express Scribe Pro, and I was having the same problem. If you go to the "options" tab and then "controller," about two-thirds of the way down the page, there's "tap lock." If you enable tap lock, you don't have to hold the foot pedal down anymore for it to continue to play.
Express Scribe and foot pedal
in Express Scribe
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I just downloaded Express Scribe Pro, and I was having the same problem. If you go to the "options" tab and then "controller," about two-thirds of the way down the page, there's "tap lock." If you enable tap lock, you don't have to hold the foot pedal down anymore for it to continue to play.