I'm referring to any Local recordings stored in the SLM local database. So this would include files recorded directly via the SLM recording control, as well as recordings that were previously imported into the SLM local database via the "Open In" from another app, or using the Import button at the top of the Recordings list, or using imported via iTunes File Sharing. I had already assumed that this might not be possible for any recordings that were just "linked" from the iOS music library.
I've been looking to use SLM to serve as my main repository for all source audio and documents/videos related to all songs I perform. So I have been actively adding documents/videos, and audio files primarily via "Open In" from other apps and then attaching to the appropriate songs in SLM. Once imported into SLM, my intention was to eliminate the need to keep copies of these files elsewhere and know that I can always find my source file in SLM. But since I need to still be able to open/edit these files on an ad hoc basis in other apps, I just realized that there wasn't a way to export any of the audio files stored in the SLM local database. So that would mean keeping duplicate source copies of all source audio elsewhere on my device which is what I have been trying to avoid.
My other use of "Open In" is to allow for an easy way to transfer documents/Videos/Audio files to my secondary iOS SLM device using the Airdrop option of "Open In". I had already purchased the database sync IAP but docs & recordings don't sync so this has been the easiest way to move the files to my other SLM device short of moving to Bandhelper. This had been working great for documents/videos, and it was when I went to try to Airdrop an audio file between my devices that I first realized that "Open In" wasn't available for audio files.