I ended up using soundfiler instead, and changed the second pedal so that it rewinds as long as you hold it down, not incremental 2 second jumps. It works, but sadly as the soundfile plays on, it sounds like it loses bit depth over time, so by the end it's very distorted. It's not so bad for a 17 minute file to transcribe, but it might get too distorted for longer files....

Hello. I'm also trying to do something similar: large wave files, pausing and resuming, readsf~, however, I need one more function. Is there any way as it's playing, to cause it to rewind a certain amount of time while it's paused?

I've connected two piano damper pedals to an arduino, to essentially control two toggle switches in PD, so that as I'm transcribing interviews from wave files, i can start and stop the recording with my feet, and not have to move the mouse, switch windows, blah blah, every time I need to stop and start the recording. So one pedal will play the file when the pedal is pressed down, and pause it while it's not pressed. The other pedal, I need it to rewind 2 seconds each time I press it, when I need to hear things again.

Any help would be wonderful! Thank you!