I have tried Reza and RioPlay, as well as Trio and the default. The default worked well for me, but it didn't allow for shoutcast, which I like. Reza I could never get to work for more than a few minutes in shoutcast mode. RioPlay was almost there, but I was seeing a lot of hard hangs (i.e. pull the plug and reboot). The configuration of Trio is much better than the otheres.

Cheers,
--Mike