At just 4.5mm thin, the 4GB CVSJ-1304 from Chinavision is probably the world’s thinnest portable media player. That’s what the company is claiming and I think they might be right. With a 1.8 inch touch screen that has a resolution of 160 x 128, and support for media formats such as MP4, MP3, WMA, ASF, and WAV, the player also has an FM tuner, rechargeable battery and USB connectivity. It’s not a bad looking player at that. How thin can we get and still be able to touch the device without breaking it?

It should be noted that I don’t trust anything that smiles constantly. Especially when it looks like this. The thing looks like it’s wearing some kind of gruesome death mask meant to be ironic when it kills you.

But if, unlike me, you find these little terrors cute, this Happy Alien Mini-Speaker can attach to your iPod, MP3, or MP4 player. With a USB rechargeable Li-ion battery, you can extend or retract its neck to change the volume. The speaker also features a 3.5mm stereo audio connector and comes in orange or blue. Get one for $11.90.

The Yinlips YDP-G68 is yet another unfortunately named device. It’s also an MP4 player that comes with a 2.8 inch TFT screen, 4GB storage, supports SD/MMC card, 1.3-megapixel camera, FM radio, AV-OUT, AV-IN and supports a memory card (up to 2GB).

This device also supports 8-32bit NES format games(The downloadable variety of course) and it plays MP3, WMA, AMR, ACC, WAV, ASF, 3GP, MPEG-4 and EXIF2.1 formats. The Yinlips is no Nintendo DS, despite their foldable design, but if you’re in a what the hell kind of frame of mind, it’s available now for $96.55.

This might be more for those who like novelty products. Or maybe you are a fan of carbonation. This device supports MP3, WMA, WMV, WAV and ASF file formats with ID3 tags with lyrics display.

It sports an OLED screen of unknown size, a microphone and a USB 2.0 port built-in. FM radio and voice recording functionality are included, as well as seven EQ settings. Internal memory comes in 128, 256 and 512MB, and 1, 2 and 4GB. You can get it in both blue and red, presumably for those with a vote to cast in the cola wars.(Your choice of fake Pepsi or fake coke)