I don't know if this will be useful to anyone but me considering I am using a Verizon Ellipsis 7/8 (I walk on the wild side of technology).
I was looking around yesterday for a means of accessing a recording from the Sound Recorder feature on my tablet and couldnt find my file anywhere to play it back. I saw in this community that ages ago others had asked the same question. Well, among other solutions that were suggested, I figured out a possible answer to my own question! If you enter your email inbox, send yourself an email. Add an attachment - you will be able to access items in your internal storage that way. The file will begin with "recordings..." the file type is .3gpp - you can convert this to an mp3 for free very easily at https://www.zamzar.com/ so you can open the file anywhere. If you need a different file type you can also use http://www.audioconverto.com/. Hope that helps someone! If not, I have 99 problems but I just lost one!