Having a similar issue using my Infinity foot pedal with Express Scribe Pro. I can rewind and fast-forward, but not use the middle pedal to play/pause. Has anyone gotten this issue resolved?
Also, did you register your foot pedal? Wondering if that has anything to do with it? I recall reading on the ExpressScribe website that a software license is required with this Infinity foot pedal (and I think any others that aren't the Alto Edge foot pedal). Mine is used.
Also, my foot pedal works perfectly with another transcription software on my computer, so I doubt it is a har