So, this is just to if it was feasible and a bit of fun
Here is an audio player that uses [line~] for audio and [line] for the control
line-play.pd

Doh! the file size seems limited to about 60MB before the sound goes weird

@Balwyn Maybe [vline~] and [tabread4~] would improve the precision?
David.

@whale-av said:

@Balwyn Maybe [vline~] and [tabread4~] would improve the precision?
David.

Thanks David! that made all the difference, in fact just changing [line~] to [vline~] did the job with 197MB no problem.
vline-play.pd

Edit:
i also added -maxsize 2e+09 to the read message, something you recommended years ago

The maxsize for table is not necessary anymore, there is no limit to how big files can be loaded into table now a days. So no need to do that

But yeah, playback can still be an issue.