If you aren't an iTunes user, then it certainly won't offer you much--I'd be surprised it it would work at all without an iTunes account activation.
Roku is interesting, but their stream from iTunes option is not great:
"MP3tunes on Roku is the newest, most affordable way to listen to your iTunes library all around the house, as well as on mobile devices and in the car. No longer are you tied to your computer or an iPod–instead, MP3tunes syncs your library (10GB FREE for Roku customers) to ‘the cloud’, and from there, you can stream to any Roku."
Roku is interesting, but their stream from iTunes option is not great:
"MP3tunes on Roku is the newest, most affordable way to listen to your iTunes library all around the house, as well as on mobile devices and in the car. No longer are you tied to your computer or an iPod–instead, MP3tunes syncs your library (10GB FREE for Roku customers) to ‘the cloud’, and from there, you can stream to any Roku."