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receive the number of songs in the current playlist

This is only in the dynamic data partition, but we know how to get it

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get albumname

this is in the FID tag entry, easy to get once you know the FID

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jump to a specific song in the playlist
jump to the mainplaylist

The emulator does not have to match exactly feature-to-feature with an iPod, either. I think the main features that would make it doable would be song display, controls (prev, next, pause) and playlist selection. The playlist selection one would be where the most work would have to be done.
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Mark Cushman