break that file into multiple files that cannot be listened to individually


You might also look into the bitrate of the original MP3 with Audacity. For spoken words, you don't need stereo and you don't need a high bitrate... you might be able to re-encode it into a lossless format (mp3 sucks) with lower quality settings and no loss of content and get to the 15 MB limit.


Unless her funeral was several hours long.