In a word the short answer is no. Some publishers allow the use of their material if you only distribute a certain number of copies and charge little or nothing for them,basically the cost to produce or less.
I have seen a it done howbeit illegally where a vocalist(s) will record to a vocal backing track and then sell the copies at their gigs. Technically they could be sued.
Karaoke tricks use EQ to carve out the center of the stereo mix, but this is not practical surgery; it usually carves out EVERYTHING in the center leaving a mess.
If you want backing tracks, get midi files and remove the lead track or buy karaoke cds....
