[Flac] flac time retrieval

[Dat Head]

somebody asked about this last week - not sure
if they were linux or not (work on cygwin too!)

shntool does this for you but only i did it just
as an exercise (or didn't have shntool at the time?)
also it prints total in hh:mm which i sometimes need
instead of mmm:ss

one recent mod i had to make when i went from
flac v1.1.2 to v1.1.4 is that 1.1.4 returns an extra \r
when you ask for a metaflac field (should it?)

attached file (hope attachments work to the list?)
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