Clip Zip 4GB removes IDv2 and album art

You might try manually reapplying the latest firmware (see the firmware upgrade sticky thread at the top of the forum)–sometimes the firmware can become glitchy over time.  If that doesn’t work, you could try reformatting the player under its System settings (transfer any content you want to save to your computer first, as the reformat will erase your content on the player)–a reformat can fix odd circumstances.