How to stream from iMac to Sony Blu-Ray S370 Player?

Suggestions on how to stream video/photos/music from my iMac to my Sony Blu-Ray S370? I have used the MediaLink program to stream from the iMac to our PS3 which works great, but have a new S370 upstairs that I'd like to also stream to. MediaLink doesn't seem to work with this player. Any suggestions on how to stream to the S370?