Premiere Pro - downloaded Youtube mp3 background music not giving any sound.

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Hi there guys, atm I'm editing some client work but for some reason if I add any mp3 song I downloaded from Youtube to my timeline it doesn't give any sound while the raw footage itself gives sound. Also I got multiple errors yesterday telling me there was something wrong with the background music (when I added any mp3 music).

Does anybody know a fix for this? I hope some of ya'll can help me out : )