I will be brief. South Florida's public radio station (and performance space) for jazz, latin jazz, and world music -- WDNA -- is in the midst of its fall membership drive. If you haven't ever invested in the station, now's the time. If you need to renew your membership, you can do it in a moment's notice. Call now 305-662-8889 or give through the station's website, www.wdna.org.