Do you need a DAC for internet radio only?

I'm thinking about trying out the Squeezebox Duet but I think only to have the ability to listen to Pandora, Rhapsody or several internet radio stations at this time. I have a very nice Modwright CD player and an older Sony Jutebox CD player as well. I know the jutebox would benefit from a good DAC but I only listen to it now on random for background music which would be the purpose of the Squeezebox. Does the Squeezebox benefit from a DAC when only listening to the internet? At this time I do not think I will rip my CD's to a hard drive.

I'm not adverse to a DAC and if there is an improvement, I would consider a DAC in the $500 range. Suggestions if appropriate would be appreciated as well. Thanks, Mike