Two issues here:
1. When a service like Amazon Prime has multiple videos with the same name, it is impossible to queue more than one at a time. To record more than one, the videos must be queued and recorded separately.
2. Recording a video will overwrite (delete) a prior recording of the same name, with no prompting. This occurs when restarting a failed recording, and when recording something that just happens to have the same name as a prior recording.
Other software I use understands that automatic deletion of a file is a bad thing, and appends a number to the file name to make it unique. Playon should implement something similar, both to avoid deletion of recordings that may actually have value to the user; and to allow queuing of multiple videos of the same name.