Broadcast waves
should import to the right place. But you never know if the person on the other end has some weird offset thing going on, or if you've accidentally set a SMPTE offset in your options that might muck things up. Putting it in the filename eliminates all ambiguity. And I think most versions of Pro Tools
still don't let you spot all waves to timestamp on import (which is ridiculous), so your mixer will be much happier if it's in the name.
The way we did it at the TV studio I used to work at was:
[ShowPrefix][CueNumber][Date][CueTitle][TimeCode], with underscores as delimiters
So, for example, if your movie is Raiders of the Lost Ark, and it's the first music cue of the first reel, it might look like this:
ROLA_1m1_Apr3_OpeningTitles_01_05_03_14
Or some such. Of course, if it's a small film they might not be using reels, so you can just do "0m1" or "m1".
That way you've got all the information you need about the file version, project, everything, right there.
Hope that helps!