But there is a seek function (or at least what I would call seek): press and hold (> 0.5 sec) on either the Fast Forward or Rewind on the RIO remote, and it will seek up, or down, to the next radio station.

The reason it jumps off frequency is due to the station list available over RDS to the player being re-populated incorrectly. It is a genuine bug in 2.0 final.

PS. Squeaky brakes either mean the pads have dust behind them (remove, air dust, clean the pad backs and then apply high temperature grease to the back of the pad backplates before re-inserting) or that they are worn down to the backing plates (you are about to die).