The nRF24L01+ has enough bandwidth for audio, but the problem is going to be driving it from an Arduino fast enough (you'll be handling A/D traffic at the same time remember). I've sent audio with nRF24L01+ before but with a 32-bit microcontroller and an I2S ADC, but I think its hard to get that working on an Arduino because its only 8-bit.
The version with built in ADC/DAC support might be the answer for the audio (haven't looked at that module/chip myself), and you could use a separate transceiver pair for control data on different channel.