While the "long story" of downloading these MP3s started with frustration and slow loading bars, it ended up paving the way for the massive streaming culture we live in today. Those old MP3 files, probably still sitting in a "New Folder (2)" on an old hard drive, are digital fossils of a time when we worked hard for the music we loved.
For projects requiring background music, consider royalty-free tracks from websites like: Dostana Mp3 Song Download