@Lily: No, you can't. You have to switch the output profile manually for each convert, I'm afraid.
@wayspooled: Another Biggles fan, cool
@idum: Sure, calibre is currently compatible with a couple of smaprtphone, the iPhone and Android based phones. It should certainly be possible to add more in the future.
@AprilHare: Can you please followup up in the calibre 0.60 thread in the calibre forum (basically, I'm guessing you need the 32 bit libphonon library)
@tonyofla: That error usually means a corrupted installer.