ba3c66f6_MP3val_0_1_8__Documentation__Comments
[WARNING message] Non-layer-III frame encountered [Fixable?] - [Comments] 
MP3val was primarily designed for MP3 files. That's why it warns about MPEG frames with layers other than III. If it is an MP2 or MP1 file, this warning should be ignored. If you want to fix this issue, you should reencode the file.
MP3val 0.1.8: Documentation
Comments