recognizing changes in files

[Dr. Diesel]

>>>
>>> Amarok detects collection changes by detecting changed directory
>>> "mtime" values. To get a certain directory rescanned (if it doesn't
>>> happen automatically), just "touch" (Unix command) the parent
>>> directory, and then click "Update Collection".
>>
>> AFAIK mtime (modify time) of a directory is only changed if a file is
>> added or removed. If file content changed none of the parent
>> directory's times are changed (At least on my system). Only file times
>> are changed.
>
> Yes, our system isn't perfect, but "good enough" for most common
> cases. We haven't changed the system from Amarok 1; it's basically
> still working the same way in Amarok 2, because it worked out pretty
> well for most users.
>
> Ideally we would track the mtime of each file in the collection, but
> this would simply have too much impact on performance.
>

Agreed.  Given that nothing is ever static and there is more than one
way for changes to happen without being "noticed", how about a super
low speed collection crawler?

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