While the phrase looks like a relic from a 2005 forum post, it points to one of the most iconic features of Need for Speed: Most Wanted : the incredibly immersive police scanner audio.
This is a very specific, nostalgic query. You are likely looking for the of the Police Dispatch / "Copspeech" from Need for Speed: Most Wanted (2005) — the iconic lines like: nfs most wanted copspeech big sound file rapidshare
For years, the search query "nfs most wanted copspeech big sound file rapidshare" has echoed through old gaming forums. It represents a time when modding was wilder, file hosts were sketchier, and 2GB files took a week to download. "nfs most wanted copspeech big sound file rapidshare"