http://atari2600.muxtape.com
(I've never been happy with the flow to the Pistols song and the volume doesn't sound congruous; & the volume for the Coltrane track came out too loud)
http://soniclife.muxtape.com
(mostly happy with this one)
Feel like doing more of these sometime...
A handy and free tool for equalizing volume with several mp3 files is mp3gain.
http://mp3gain.sourceforge.net/download.php
...a muxtaper's friend it is...