I've used EAC to do this. Instead of ripping individual tracks, tell it you want to "Copy Image & CUE Sheet." That will make a single WAV file of the entire CD, then you can convert to MP3 from that.

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MP3 is lossy (as is WMA); recompressing the file is going to degrade audio quality further than you have already.<P>If you don't have Nero, use Winamp 2.23. If you select the Disk Writer output plugin ...