This bug affects the default Media Player and MP3 files.
A typical music list.

A typical play list. Now play this list on battery power and after the play list completes, or to tap pause (to simulate an unfortunate interruption to your music pleasure), and allow the Zaurus to suspend. BTW, this problem also occurs when you simply cycle the power of the Zaurus.

Turn on the Zaurus, and your play list is 'gone'.

Turn on the Zaurus, and your music list is 'gone'. Restart the straighten out the Media Player's recollection.

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