I only use MP3s very rarely, and in very specific circumstances, such as I mentioned in my first reply. I have turned down numerous DJ job offers. I also accepted a couple because they were too lucrative to refuse.
One was at a car dealership opening a few years ago. About six hours of clicking MP3 files from a laptop for $200/hour, while I sat in a lawn chair and sipped soft drinks, ate hot dogs and watched people shop for cars. Sign me up for the next one!
I couldn't do it very often though. It's just not what I got in the music business to do.
I have more freedom now to turn things down that I don't want to do. There have been many times when I compromised my "musical integrity" to help raise a wife and family.
You do what you have to do.
DonM