yes. you can route the outputs in ableton to any channel of the 62.
here are instructions for using effects in ableton.
dj.rane.com
what you want to do is similar to the link above. the difference is you will route the tracks/auxes to 1/2 and 3/4.
enable 1/2 and 3/4 when setting up the audio configuration. and in the channel/aux you want to go the left channel, select Ext IO 1/2 and for the right channel Ext IO 3/4.
FYI 5/6 is the sp-6 (aux) and 7/8 is the fx return