Enthusiastic public announcements aside, sometimes the check doesn't arrive as promised. So put down that champagne and heed the advice of entrepreneurs who've dealt with the disappointment of disappearing capital.
Michigan State University students created TempoRun, an app that helps users run at their ideal pace by categorizing the music in their libraries from walking to 10 sprinting.
Ryan Barr, founder of WhippingPost.com, makes durable leather goods for musicians, including a "picker's wallet" with a dedicated stitched pocket for a guitar pick.
From zoning ordinances to quirky local statutes, legal issues can slow down a launch or expansion. Some entrepreneurs take matters into their own hands.