The first place you have to check for recordings is on the internal or external storage. On the internal storage, you can find the recordings in the Recordings folder placed on the root of the storage. If it's not there, then access the external storage, and look for the same folder. In case you won't find anything, connect the SD card to PC and use Recuva to restore the files if they were deleted. This process works only for SD cards and not the internal storage.
Download Recuva: http://recuva.software.informer.com