Import m4a audio into JOSM

Background: I recorded some voice memos while surveying. The voice memo app saves the memos as .m4a files. When I attempt to import one of these files by dragging the file from my file browser onto the working area in JOSM, I get the message, “Cannot open 1 file because file does not exist or no suitable file importer is available.”

Workaround: I figure I can convert to MP3 files and go from there, but before I do that, I just wanna make sure, is there a different workflow to import m4a files that I’m unaware of? I searched open tickets on the JOSM site and couldn’t find anything specifically related to m4a files.