The file extension ".FLAC" you mentioned suggests that you're looking for a lossless audio file format, specifically a Free Lossless Audio Codec (FLAC) file. If you're interested in downloading or streaming the song, you can find it on various music platforms. Would you like more information on where to find it?
The correct song title is actually "Girl You Know It's True". Milli Vanilli was a pop duo that released this song in 1989, which became a huge hit. However, the group faced controversy when it was revealed that the duo's lip-syncing was not actually performed by them, but rather by session vocalists.