Speaking of file browsing on the H140 remote, the Nav/Menu click-to-play
button sometimes doesn't work if the HD has stopped spinning. Try this:

On the remote, browse to a dir containing several tracks and click one to
play. While it's playing, go back to the file browser, move to another
track in the same dir.

If you select it while the HD is still spinning, it works. If the HD
stopped, sometimes nothing happens, no matter how often you click it. If
you move up or down the list, the click works again.

--
gl