WMKK Kuala Lumpur Control radio traffic 1700-1730Z is available as a downloadable archive.
The transcript suggests there are comms from Malaysia 370 (MH370) at 17:01:14 (+8
01:01:14)
The archived radio recording is silent at the time indicated in the transcript. The other times indicated in the transcript also do not bear these communications, through to 01:19:29.
Each downloadable file is 30 minutes long, so that final transmission would be at 19:29 in that 30 min file.
http://archive-server.liveatc.net/wm...2014-1700Z.mp3
LiveATC.Net ATC Audio Archives
One of the transcript links
Revealed: the final 54 minutes of communication from MH370 - Telegraph
Maybe I have got the wrong day...