QUOTE(kornchild2002 @ Jan 29 2007, 14:21)

Do these songs play fine in iTunes? I know that you using dBPowerAMP hints that you don't want to use iTunes but you should try playing them back in iTunes. You could also try playing them back in QuickTime. It kinda sounds like the same Lame mp3 VBR issues in that, whenever the bitrate increases drastically, the iPod will insert an audible pause as its processor has to throttle up.
Neither iTunes nor Quicktime is installed on my system. In fact, both were but both have shown me that they don't play nice with my system so I'm in no rush to put them back.
If the above problem is the issue, and it sounds like it very well might be, it sounds as if there's no real solution other than to pick a CBR format.
I wanted to use this for audio demos at various shows and wanted to remove this as a limiting factor. When we use MP3's, even 320k, people continually ask about uncompressed or lossless sound.