>This means that the Nth track will contain all N prompt recordings in sequence. Is that what you want?

No.   Please use File>Export Multiple. 

THis will create a wav file for each audio track in audacity.  Please make sure the name of the audio file corresponds to the name used in the prompt line.  You can do this with the prefix selection in Export Multiple.

> I see that Audacity is capturing the mouse/keyboard clicks that trigger start and stop of recording. Do I need to filter them out before submission. What's the suggested procedure?

Preferreable not to have clicks in recording - Audacity has keyboard shortcuts: shift-R for record and space bar to stop... might be quieter to use those.

thanks,

Ken

--- (Edited on 9/28/2016 3:09 pm [GMT-0400] by kmaclean) ---

Thanks Ken. Found why the tracks were getting concatenated. "Overdub" preference was on. Turned it off to record each prompt as a separate track.

Btw, is there a preferred alignment setting? 

--- (Edited on 9/29/2016 1:34 am [GMT-0500] by Visitor) ---

>Btw, is there a preferred alignment setting?

not exactly sure what you are asking...  usually you have a text file with all the prompts in it, where the first word corresponds to the prefix of the name of the speech audio file.  Each prompt recording should be no more than 10-15 seconds.  No aligment is required.  See here for details.

--- (Edited on 9/29/2016 10:05 am [GMT-0400] by kmaclean) ---