You can listen to some Posse members at the following podcasts:
Rett MacPherson interviewed by Critical Co-Op about her new release, Sleeping the Churchyard Sleep
Marella Sands in a Doctor Who podcast, recorded at Archon 38, along with JB Anderton and Jennifer Picker
Critical Co-op will be interviewing Mark Sumner and Marella Sands later in November, and will interview the rest of the Posse in 2015. Subscribe to his podcast channel for updates!