loads of hidden files generated?

[MuGeN]

Hi guys,

recently, I've noticed when things are copied onto my computer it seems to make an invisible version it (well, the same name) but its only 4kb

So if I copied a file from say itunes to my desktop the file might be:

01 My Song.mp3

It would generate

._01 My Song.mp3

any idea why its doing this? is it something to do with Time Machine tracking changes or something?

 

[Spyhop]

I'm guessing it's a non-HFS+ volume? Those files are a workaround for the "resource fork" that is usually part of the original file on HFS+. It predates Time Machine.

Take a look

$ cat ._01 My Song.mp3