Tpy, it might just be your wireless signal strength/available bandwidth. Try running wired and see if you have the same problem. Is your wireless router 802.11g or 802.11n? The best way to deliver wireless would be to get a wireless router that does 802.11n ON THE 5GHZ BAND (aka a "dual band" 802.11n router), and get a 5GHZ 802.11n wireless bridge that will pick up the signal deliver it to your SB through the wire. The 2GHZ band is very noisy so going to 5GHZ can greatly improve signal strength. HOWEVER, the range is not as long as 2GHZ, so YMMV depending on how far your router is from your SB.
If it's a long distance, you can get 2 more wireless bridges and connect them with a crossover cable at the point in between your router and SB. One bridge picks up the signal from your router and the other broadcasts it again (when set to access point mode), effectively acting as a signal booster.
You can pick up refurbished a WNHDE111 wireless bridge for a little over $40. For a router, I recommend the Linksys WRT-400n, about $60 refurb.
If it's a long distance, you can get 2 more wireless bridges and connect them with a crossover cable at the point in between your router and SB. One bridge picks up the signal from your router and the other broadcasts it again (when set to access point mode), effectively acting as a signal booster.
You can pick up refurbished a WNHDE111 wireless bridge for a little over $40. For a router, I recommend the Linksys WRT-400n, about $60 refurb.