Topic 1635 [macintosh]: Garage Band!
#351 of 355: John F. Whitehead (jfw) Fri Mar 2 '07 (22:57) 6 lines
you can do those to some extent with garageband. if they're orange
tracks convert them to purple first (ctrl-opt-g) and then the region
editor will allow you to adjust them.
if you need more features, Logic Express and of course Logic give you
a lot more control.