Of course due to the limitations of ID3 the empeg will not support tags such as tempo but this can be accomplished by nested playlists

Yes, it can. Currently playlist selection is actually limited to 'this is what you picked at the last sync'. The limitations of the ID3 prohibit searches beyond the current field set and compared to music match this is a problem.

It would be possible to have your songs all grouped into playlists depending on style/genre/mood etc. but this might be more irritating just doing the navigation!

stay in touch 'cause I'm sure that this is something that the programmers will be revising.

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Murray