You must keep your computer and the app running when podcasting or broadcasting with Studio.

For example, you cannot set up your playlist, hit play, and then shut down the app assuming it will keep going - the app has to stay open. The only way to have content play later is to first record your audio, then access the ​finished​ recording in your Drafts & Uploads, click Publish, and then choose to Publish later at a set time and date.