Another option for you to consider is to connect the Roku 3 (wired or Wi-Fi) or the Roku Streaming Stick (Wi-Fi Only) to your Oppo 105. I have not tried this but am thinking about buying the Roku 3 (no decision yet).
The Oppo 105 only supports Pandora and Rhapsody streaming while the Roku 3 has over 83 music channels . In addition, I discovered that TuneIn is included with the Roku 3 (TuneIn provides streaming music radio and streaming talk radio). TuneIn allows you to create "custom" URL addresses so that other stations can be included. For example, Radio Swizz Jazz and Linn Classical can be added to your Oppo favorites list. This URL option opens up many more possibilities for Internet radio streaming.
See:
http://www.roku.com/channels/#!browse/music/by-popular
While Wi-Fi is a Roku option, a wired connection is better. My Oppo Digital 105 Blu-Ray player has been connected to the Internet using an Ethernet over power connection. It has proven to be a very reliable connection. Connection problems are very rare. My video system, dishwasher and other home appliances do NOT interfere when I am using the Ethernet over power connection for my Oppo 105.
I am using the ASUS home plug av power line adapter kit PL-X32m rated at to 200Mbps (Ethernet over power).
The ASUS Home Plug AV Ethernet Adapter lets you pass through the existing electrical power lines in your home or office into a high-speed network. There are many other Ethernet Adapter brands on the market. Another option is the Linksys PLEK500 Ethernet over power device (highly rated by CNET).
There is no noise problem with the Ethernet over power since it runs on your electrical lines at a higher frequency than the electrical power. I suggest you plug the ASUS device "directly" into the router and NOT into a switch box. Mine was first plugged into my Netgear switch box but I discovered I got a better connection by going directly into my router.
Ethernet over power is much better connection than a wireless connection. It was very difficult for me to run another Ethernet wire from my router in my home office to my living room and the Ethernet over power solution works fine.