How to convert a recorded conversation to a file

Hi, All IT Specialists here:

I recorded a conversation with my ex regarding child support/custody issues which is very favorable to me if I present to the court. However, I recorded into a device called Digital Voice Record (a small handheld device bought from Best Buy). It is just not convenient to carry the device to my attorney, to the court or wherever I go, plus how about somebody just grab it and destroy it, I will have no evidence at all.

So my question is : How to convert the recorded conversation into a file, so I can send through attached emails to my attorney or somebody else?

Thanks a lot in advance.