I am trying to create an app that will perform actions on specific times (much like the Windows Task Scheduler). I am currently using Process.Start() to launch the file (or exe)
I tried to open .txt file and the process of my text editor was returned, also I tried .mp3 by WMP and it returned null. So it depends on the application. Do you need to run you mp3 only with WMP? If not, you definitely can create the application which will return the Process object.