Question What if I need to reinstall my operating system ?
  Nothing.

Question How long can I use this unregistered version?
 

5 days. 


Question If I purchase Scheduled Audio Player how long can I use it ?
  Registered users of Scheduled Audio Player are immediately eligible for lifetime upgrades and support. Once you purchase Scheduled Audio Player you can use it for as long as you like and if a new version is released you can get that too. Nothing more to pay ever.

Question If I buy Scheduled Audio Player, how many computers can I install it on ?
  Registered users of Scheduled Audio Player are allowed to install the program on only 1 computer.