The first -- which should be just a matter of time -- is the lack of support for any of the next-gen audiocodecs, but the second might not ever happen.
Audio purists will appreciate the device's new 5.1-channel sound enhancement technology and support for the MP3, WMA, OGG, FLAC, AAC, M4A, WAV and MP3HD audiocodecs, and video hounds will love being able to playback MPEG4, WMV, H.264, Xvid and Divx files.
It incorporates Creative's innovative patented Quartet digital signal processor (DSP) with four independent processor cores, and is the first processor to integrate an array of DSP cores with high-quality HD audiocodecs of over 100dB on a single chip, giving it tremendous versatility for PC and embedded configurations.