If you are looking for a waterproof MP3 player for your shower, there are plenty of nice products like for example the SUNTAC Shower MP3, which only support USB memory keys. Now there’s also the SOUND Drip-Proof MP3 aka DC-SCDP1/256 from Digital CowBoy. It does not support USB memory keys but rather SD cards and it also has 256MB of internal memory. The player supports both MP3 and WMA files and also has an FM/AM tuner. The device measures 130×60x130mm and weighs 415g.