Since 2010, ShareSquare (http://getsharesquare.com/) has offered a self-serve CMS for creating freestanding mobile sites as stop-gap supplements to any legacy desktop site. Instant optimization on all mobile/tablet devices (iOS, Android, Windows Mobile, etc) thanks to JQuery & HTML5. No coding required.
Apropos of nothing, it also looks like a team side/passion project recently "nailed" (perhaps unintentionally?) one of music's thorniest UX problems: BEASTMODE.FM (http://beastmode.fm/).