I have an iPod Mini. Note that he siad the ipod doesn't support WMA (Windows Media Audio on a Apple device is a no-no), he didn't say it had to be in MP3. Here are the formats you can use
AAC: 16-320kbps, 44.1-48khz. (the higher the number the higher the quality). AAC is MUCH better than MP3. A 128kbps AAC file usually sounds better than a 320kbps MP3. I use 320kbps 48khz AAC, and I personally can't tell the difference between the original and this, and since my iPod won't hold everything at a higher quality, this is the next best thing. It takes up just a bit more space than a MP3, the quality-size ratio is well worth it though.
AIFF: This is excactly the same as WAV, only it's made by apple. see WAV for details.
Apple Lossless: This is an excact copy of a CD, but it is compressed. Mathematically no quality is lost, but each CD ripped will be smaller. I tried using this format once, my 345MB original CD ended up being 230MB.
MP3: You probably know more than you should about theese, and if you don't, then search on the internet because my fingers are getting tired

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WAV: 8-48khz, mono or stereo, 8 or 16 bits. This is an EXCACT copy of a CD. Unlike apple lossless, this does not compress the music, even though the quality is excactly the same with it compressed. EX: a 345MB CD will be 345MB in your hard drive, even though you can get exactly the same quality with apple lossless.
Hope this helps
