It's definitely important to eliminate any distractions while focusing on the singular task at hand: The task that has been prioritized. Singular being the key word here. To truly commit to a project, multi-tasking will not serve. Multi-tasking = Scatter-brained. Not ideal if we wish to put our best foot forth on a project.
The tip about listening to a podcast during the commute, however, is an example of effective multi-tasking. And great advice to make the most out of the free time that an otherwise busy schedule has available. Time management skills!
time is the most valuable resource one possess and one who knows how to manage it properly is the one who never complains