Since you brought up Scrubs, there's another funny thing about syndication. Oftentimes the music is not paid for in perpetuity, meaning only a couple seasons can contain the original music. Scrubs is one of these, if you watch streaming now it will not have the music it had then. Another example is The Wonder years intro song.

https://gamefaqs.gamespot.com/boards/225-television-broadcast-tv/60153113