- speaker(4) was recently modernized to lock the driver per-playback
instead of per-open. Update the man page to explain this change.
- added a reference to MML and SMX in the historical context to make
it easier for users to find additional documentation online.
Signed-off-by: Raphael Poss <knz@thaumogen.net>
Reviewed by: ziaee
Closes: https://github.com/freebsd/freebsd-src/pull/2183
Raphael 'kena' Poss
e26b5e0749