Thanks for your replies fellas. I guess I should have menchened this is an AVAYA Definity switch. Also they have a buget of $000 dollars because they are going IP very shortly.
Super quick, cheap, and simple MOH options:
1) take an old PC and connect sound card to MOH port, play MP3's continuously or stream music to it
2) grab old radio and connect, play prairie public radio (usually never an issue and mostly instrumental in most areas)
3) grab any old cd-radio/boombox/cdplayer and get a cd of instrumental music
Most of these can be done with stuff laying around just about any office or something from the garage/storage closet at home with less than $10 investment.
Not the best answers but can work in the short term