"bucko" wrote in message
news:ejKKb.752857$HS4.5926414@attbi_s01

Which design is considered to have better sound quality for use in
automobile applications through an Auxiliary Input to the car's
stereo's system. The Flash Card types seem to have longer battery
life and are smaller and lighter but have less capacity. What about
the sound quality?

At this point, the music players designed for use with memory cards are all
players of compressed files. While there are memory cards with capacities up
to a GB or more, they are still relatively small compared to the size of a
respectable collection of .wav files.

In contrast, hard drive-based players like the iPod, the Creative Nomad
Jukebox, and the iRiver IHP-120 have 20 GB or more space, and are effective
players of .wav files.

..wav files are essentially the same information as CD audio tracks, and are
the reference by which the various MP3 and other compressed file
technologies are judged and found to be wanting, either slightly or greatly.
Therefore hard drive players have the capability to sound better than
memory-card-based players. However if you play MP3s on a hard drive player,
its unique sound quality advantage is no doubt lost.