I think it would completely drain the battery of the Kindle. I think if you are playing "background" music on the Kindle, it might keep going and play it again, but I don't know. Take a small snippet of sound, put it in the "music" folder, and play it. See if it continues to replay it. Also make sure it continues after the Kindle goes to sleep, which it might not.
An old Walkman cassette player would probably work great for this. Most cassette players have a repeat switch that makes it keep playing when it hits the end.
|