Like Peter said, no one has ever asked for it before.

Actually, he said the exact opposite...

FWIW, I can actually understand why one might want this, but only in a scenario where your playlists have some specific sequence built into them. If the playlist is shuffled, then the effect becomes a lot like doing an Insert and then skipping a track. If the playlist is in order, however, the proposed functionality becomes a lot more like if you had an MP3 CD with 150 tracks on it and you're on track 30, but you want to skip ahead to track 120, and then listen to 121. In the empeg methodology, you can search for 120, but after it's done, it's going to play track 31.

I personally wouldn't have a whole lot of use for this search mode, but that doesn't mean it's not a valid request. Your listening and organizational strategies and mine aren't the only valid ones on the planet.