Music Rotation in the Podcast

Hm. I'm trying to make a decision about how I do music in the podcast. Currently, I don't get podcasts produced very often, in part because of the time involved in finding new music. I've also noticed that it often takes me a couple of hearings to get really hooked on a new song. So I'm trying to decide whether to only play new finds (without repeats), as I've been doing so far, or to start allowing songs to repeat, albeit in varying mixes, to increase exposure and get more people hooked. What do you think?