If your husband is strictly using .mp3 audio files, there should be no problem with having an iPod or iTunes on the same computer. That said, each client software app has its own way of handling data, and even the manner in which the files are stored on a computer. iTunes won't convert the .mp3 files, but it can shuffle them around if one is not careful. But it's generally easy to have Windows Media Player reread the library so that it works with either application if iTunes does decide to run amok and rearrange things.
If your husband uses .wma audio files, iTunes is unable to use those straight away, but instead can offer to make versions in AAC (.m4a) or .mp3 format, which then would be compatible for an iPod. It means that there would be multiple copies of the song in the library, only in different formats. The original .wma files will still exist. It potentially makes for a library management headache, but all of the music would still be there.
If you want a Windows Media Player-compatible player, there are a number of options available to you. Sony makes a couple of WMP-friendly devices that compete directly against the iPod nano. Both the E-series and S-series devices offer 8GB and 16GB flavors, have large screens and can play video...if need be. Sandisk makes the Sansa Fuze, available in 8GB form for usually around $80. The Fuze also allows you to add additional storage via a SDHC card slot (up to 16GB, for a total of 24GB of storage). The Sony Walkmans will sound slightly better that the Sansa, but I have both the Fuze and a 16GB S-series and you really can't go wrong with either. I'm not a fan of Creative these days, so I can't help you with information on their devices.
The Zune HD uses proprietary software; Microsoft's own WMP will not work with managing the HD. That said, the Zune software (that's what it's called) does play nice with existing media libraries and can easily co-exist with other software. It will play .wma, .mp3 and .m4a files without any hassle, other than you must use the Zune software to manage the device. A 32GB Zune HD is my current player of choice; it's simply put a great device. For almost the same money these days, you can buy a 16GB Zune HD over a 16GB nano; despite nano's video camera, the Zune HD IMO has the nano beat in so many other ways.
Good luck with your quest.
I currently have a Creative Zen Nano Plus 1GB MP3 Player. I love creative, but this doesn't hold nearly enough music & I totally dislike the tiny screen & not being able to see what's on there. So I'm looking for at least an 8gb mp3 player now.
I looked at the ipod nano. But my husband has a creative mp3 player that uses windows media player. His concern is that itunes will convert all the music & he won't be able to use it on his creative. Is this the case?
As far as creative, can anyone recommend what might be good? I'm not really up to date on what's out there right now. Just would like at least 8gb, a screen that I can see & use, good sound, and ability to use windows media player.
Is it true that with zune you can't use media player?
Thanks in advance for the help.