As if we needed any more evidence that the Sidekick LX is dropping in the very, very neat future, T-Mobile has gone ahead and uploaded the device manual onto their support site. Seeing as we’ve had our hands on a Sidekick LX of our very own for quite some time now, there’s not a whole lot of new information here, but it’s a good read nonetheless for anyone waiting impatiently for the upcoming release date. One notable piece of info, however, is that the LX’s media player appears to support a much wider range of filetypes than the Sidekick 3. The new LX will happily playback MP3s, WMAs, AACs, MIDIs, AIFFs, and WAVs. The poor Sidekick 3 only supports MP3s. How very old school. Hit the link for more reading pleasure, and let us know if you come across anything of note.