Problems with audio files being played on Google Music

[RPK925]

Hi I just sent my Note 4 into Samsung because it wouldn't update to 5.1.1. I have a call recorder and the .m4a audio files were being saved on the internal storage, so before I sent it in I transferred the whole file of call recordings to my memory card(there were a lot I think 1.3G worth). Now whenever I play google music the phone recordings are in my libary? How do I get them off my Google music? Thanks