Find file properties (location)

Hi I am trying to move all my music off my internal memory to an SD card, however a lot of files are titled with just numbers (rather than song tites - I think this is due to the fact they are Google Play files). 

I want to check the file locations for the files the SanDisk app has found to ensure these randomly numbered files are not actually sound files required by other apps.  I can’t seem to find a way of showing file properties or any other way to find out where on the internal memory these files are stored.

I’ve tried plugging my phone into my laptop to search for the files but they are not showing up (google map do something to hind them?), so I have no other way of finding them!

Thanks for any help anyone can offer.