I use a Numark CD Mix II for ceremonies / back up and it finally broke on me. The right CD side won't cue up, after I load the CD all I hear is slight ticking sound. I have decided to replace it with a small mixer and two MP3 players for ceremony / back up use. I need two mic inputs and two stereo line inputs, one for each MP3 player. I have found a number of small mixers but none seem to have a mono button which I need since I only use one speaker for most ceremonies. Does anyone know of a mixer that would fit the bill? Any suggestions would be appreciated.