wav audio file uploading to iphone

[cwong668]

i was trying to upload a wav audio files folder to iphone ... there are 15 files in the folder...
i used itune to upload the 15 wav files to iphone...
the problem i have i can not upload all 15 files to the same location level ... there are 12 files uploaded into a folder and 3 files not loaded into the same folder...
i deleted all the files and uploaded a second time ... this time there are 10 files uploaded into a folder and 5 files not loaded into the same folder...
i do not understand why it uploaded some files into a folder and the remaining other files not uploaded to the same folder ... why not all the files loaded into the same folder? ... my preference is either to upload all files to the same folder or not upload all the file to a folder ... i do not prefer to split the uploadings...
i tried to move the wav audio files out of the folder, but it would not allow me to do so ... and it also would not allow me to move the other wav audio file into that folder ... it is quite strange that it would not allow me to do any wav file move in or out of the folder...
any help that i can resolve this issue?...
please advise...
cheers,