Well if you showed some geniune initiative instead of moaning then you probably would have seen
http://www.asus.com/support/download...io.zip~zaqwedc
Or go to the Asus downloads site
http://www.asus.com/support/download/download.aspx
and see what updates they have for 620 and 716 (which are not that different from each other technically). You'll hopefully spot the A620BTAudio.zip.
The first thing I did upon receiving my PDA was to rush over to their site and see what updates they possibly had. I ALWAYS do this whenever I buy something new especially technology stuff.
Now I admit that Taiwan English can be hard to understand ("Improve Snaps sound when play .WAV file" What the heck?). But surely intelligent ppl like you should have reasoned that that particular file had something to do with improvements to the audio subsystem.
Regards,
EPDM