You have to remember that there are two types of scans, the initial full
scan and then the "quick scan" which is invoked every boot after that. 

The first time you plug in a drive with a bunch of music it will not
have a database on the stick, so it will do a full scan of all the
files, it reads all the music files looking for tags and processes all
the cover art. This can take a long time, anywhere from 1/2 hour to
several hours. 

>From there on when the Touch boots it does a quick scan of the files, at
this point it's just looking up the file name in the database and seeing
if the date matches. This can take 30 seconds to a couple minutes at
most. IF it finds files that are either not in the database or which
have a newer date than what is in the database, then it will do a full
scan on these files only. 

If you leave the Touch on all the time and leave the USB stick
permanently connected then it will never have to do the quick scan and
you can instantly get to any of your music. 

That initial full scan can be a problem for some people. For some reason
some people's files seem to cause problems with the scanner (frequently
related to cover art) which causes the scanner to crash so it never
finishes the initial scan, which means it's always taking a long time to
start up after a boot because it's always running the initial scan.
Interestingly the same files scan just file when the server is on a real
computer. 

Some people will try and play music while the initial scan is in
progress, this is a recipe for disaster, this radically increases the
probability that the initial scan will crash.

John S.


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