syc music to my new 3gs is being doubled ...

hey all
i just got a brand new iPhone 3GS 32GB. once I got it home I charged it up, installed itunes from the apple site (the latest I assume). after I installed itunes and plug my new iPhone in it said to update to the latest firmware 3.1.2 so i did. the next thing i did was sync some of my songs (these are mp3s ive made from my cd's not bought in itunes).

the problem iam having is some artists are being doubled up (i synced by artist name) 3 artists have doubled up, this is bad because each artist i have 3 to 4 cds so iam getting 9 to 12 cds doubled up. i tried removing then re syncing... not luck. ive tried converting to ACC with no luck.

i was going to try converting to iphone format in the advance menu but it is always greyed out.

any help would be great.
thanks XL

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