Sorry so few Chinese are interested in gapless, but in the U.S. we have a free subscription service called DimeADozen that hosts torrents of live music shows (but only in cases where the artist permits distribution). I have 1.5 TB of live shows, all of which must be played gapless. This is a very important aspect of the X3 for your U.S. customers, and I'm glad to hear the problems are being addressed in the upcoming firmware update.
One use I've found for my X3 is connecting the line out to the AUX port on my car stereo. It makes my Honda Accord factory unit sound like it got a $1000 upgrade. Thank you so much for including an excellent amp in the X3.
I would be interested in knowing why users in Asia don't want or need gapless playback. Even if they don't listen to live recordings, don't they listen to classical music either? I was very surprised to read that gapless playback or the lack thereof could be a cultural based phenomena.