Well I think the toolbars should work the same as the main menu items , and the main menu items genrally work on all (filtered) tracks rather than all selected tracks. I could easily change it to work on only the selected tracks, but then how would customers easily apply action to all files , I think it a question of what you re used to (which may vary between operating systems), Im open to suggestions.
I understand. But what about adding a few buttons to do the same functions on the selection? Maybe as a separate strip which can be turned on or off like the multiple toolbar strips in microsoft word etc?
Another option would be a switch next to the current buttons and depending on the switch act on all files or the selected ones.