Cumulus Media has announced the appointment of Brian Sines as vice president/market manager for Cumulus Des Moines. Sines will lead Cumulus Media’s four-station group in Des Moines, which includes the radio brands 95 KGGO/KGGO-FM, Nash FM 97.3/KHKI-FM, 92.5 KJJY/KJJY-FM, and 98.3 The Vibe/KWQW-FM. Sines succeeds Adam Dobbins, who was hired earlier this year and left the organization in…