I don't know if that would "accelerate" the effects or undermine them.
One has to be careful of believing that more is better. The all or nothing thinking can undermine you.
If you want to listen to a sleep track while working on a computer, go ahead. Do it because it's convenient not because it will accelerate the effectiveness of the Paraliminal. I've had the sleep learning track going for 45 minutes to an hour because it was convenient. I've had intersting results because of it. And I didn't listen to any other tracks. I just noted my intention when I put the CD in.
I don't think you can accelerate the effifectiveness. Your mind needs a state of preparedness before it will make the adjustment.
Nagging it with a program of listening won't get it ready faster. It might even have the reverse effect. I see the Paraliminals as a means of getting the mind to make the adjustment and it will do it with a listening once a day. Use the sleep learning track to you advantage while working at the computer but I wouldn't create a program of listening repeatedly throughout the day.
The reason advertisers change their ads is because the mind does shut them out and they lose their effectiveness. The mind likes fresh ideas
Alex