Generate .cue from timestamp for long program

[RS]

>From: Live Musicfs
>Sent: Wednesday, August 2, 2017 09:27

>Radio 3 Iplayer provides timestamp and track title to seek each piece of 
>music quickly, in long program like concert and “Throughout the Night".

>The current Get_iplayer writes these timestamp to "Lyrics" embedded in .m4a 
>file, it will be  very helpful to build a .cue file from it.

>However, one problem is that the timestamp listed in webpage and audio 
>player is different. Webpage timestamp is the planned time by editors, 
>while >audio player time stamp is the actual time in live broadcast (the 
>time for news and other broadcast is variable).

This doesn't seem to work for the Proms or opera, or is it only for some 
values of --radiomode?  For example Prom 3 with --radiomode=dafhigh has 
Lyrics: and Comment: strings which I cannot copy and paste either from 
Mediainfo or VLC.  They give the name of the conductor, orchestra, soloist, 
radio presenter and brief details of the works played, but no timing 
information.