Currently Being ModeratedMar 29, 2012 11:14 AM (in response to mogfitz)
Were you able to import the wav files into your iTunes library? If so, did the songs in question playback correctly?
Currently Being ModeratedMar 29, 2012 12:31 PM (in response to mogfitz)
It looks like I have found the answer. Instead of following the advice to choose Import settings where you can select from a variety of formats such as mp3, AAC, AIFF, instead I selected the device then the Summary tab and chose the option "convert higher bit rate songs to 128kbps AAC". This gives you only one choice of compression but at least it works. I can now copy all the files with this compression. Thanks for reading this question and its answer.
Currently Being ModeratedMar 29, 2012 12:47 PM (in response to MattV.)
Thank you for your reply which I didn't see until I had posted mine. Import always worked fine, I also found all the tracks were stored in Documents and Settings (Windows XP) in m4a format which I believe is AAC. In spite of this, after the factory restore it never copied the tracks in compressed form, always choosing the original wav format no matter what Import setting I used. The solution was simply to set the 128 AAC option under the Summary tab. I guess this is the best compression option anyway, assuming it uses VBR. I am surprised that the Apple Store person could not tell me that.