Ok, so I have properly replaced the records (I call them that) files in the records folder with the songs that I want. The songs are in a .ogg format and everything. But, when I play the music disc in game, it still plays the default. Even if I remove the file from the directory completely, it still plays. Then, I go to check the file in the folder, and it is the one that I want. I know that I am using the right resource pack, I just have no idea what is going on. If any more explanation is needed, I am happy to help.
I had the same problem and what i did was i went into the records folder copied the original music in there saved it went back in and went to youtube.com, youtube-mp3.com, and media.io After i found the song i wanted on youtube copied the link into the youtube-mp3.com conveter and downloaded it as an mp3 after that converted the mp3 to ogg on media.io with that file i then just renamed it to a minecraft music disk and replaced the existing one.... Hope this helps, it worked perfect for me....
Records not playing right!