Anyway to recover deleted lecture from LiveScribe Pulse SmartPen?

I accidentally deleted a long lecture on my LiveScribe Pulse SmartPen from both my desktop client and the pen itself. I know that when a file is deleted from a hard drive or flash memory it’s still there in some capacity, so my question is, is there any way at all of recovering this audio lecture? I see all these programs online for recovering deleted files but I don’t know anything about them, which ones are virus free or actually work and specifically with the pen.
The pen does not show up as a drive when plugged in, does that mean no dice?

You can try to recover your audio file from pen drive or hard drive with Easy Drive Data Recovery software:

http://www.munsoft.com/EasyDriveDataRecovery/

It uses unique modern algorithms to recover files that other software either recovers incorrectly or is unable to detect.