My creative zen keeps telling me playback error so i can't listen to music. ive reset it a million times
either the songs are in the wrong format, or you have a corrupt DB.
Get firmware upgrade or recovery mode instructions from Creative's website.
If you are trying to download iTunes songs - dont!
The format of the songs are wrong in one way or another. Each Mp3 player has a product spec sheet that lists which type of music file it is compatible with (Mp3, WMA, WAV, AAC, etc). You can't play iTunes songs, which are AAC format, on a player that only accepts Mp3 or WMA format.
The second formatting issue has to do with the DRM license on the songs you have downloaded. Right click a song that gave you an error, click on "Properties," and click on the "License," "Media Usage Rights," or "Digital Rights Mgmt" tab (wording varies by configuration). Not every song allows unlimited or even one-time transfer to a "portable device" (code word for "Mp3 player" in this case). Also, some songs are fixed-term - they expire after a while - sometimes in as little as 24 hours.
To get around this, convert every song to Mp3 format. Either that, or upgrade your music service subscription to the highest pkg they have available and never cancel (Napster's basic music svc, for instance, does not let you transfer to an Mp3 player, but their "Napster To Go" upgrade does allow transfer).
-Tha Mp3 Doctor