We’ve written fairly regularly about Jelli, the US startup aiming to get terrestrial stations to hand over chunks of their airtime to listeners, via its website and app for voting songs onto (and off) the air. It has a rival though – LDR Interactive – which has just scored a big win with Tampa Bay station 97x. The station is handing over its entire schedule to listeners, who’ll be able not only to vote for songs to be played using web and mobile apps, but also to record their own introductions and dedications to be aired alongside them. “I haven’t seen any station launch it on this level, with the app, with the marketing, in a market this size, with a station this big,” LDR’s VP of operations Victor Caballero tells TechCrunch. 97x is part of radio network Cox Media, so if the idea works, it could well spread.