ipodd big trouble

[mjandrews96]

ipod trouble
i have recently tried to put extra tunes onto my ipod from my itunes library..
These tunes have transferred zok, but a very big but, lots of tunes now show an exclamation mark before the title. and show this message "the song ????? could not be used because the original file could not be found.. would like to locate it.. when i press yes it asks me for file name.. I dont have a clue what this means can anybody help at the moment the above applies to approx 100 tunes help hellp help

[jno]

have you looked in My Music? Try a search for the title of the song or the singer's name

[Milvus]

Did you load your original songs from your iTunes?

[AlBags]

Are you sure you didn't place some sort of shortcuts there (instead of the original files? If you can check the size of the files .. that will tell you.