Audio problems since installing router

Question

Just installed a WRT300N and anytime I'm connected to the internet and attempt to play any kind of audio (MP3s, games, videos, etc.) I get a some choppiness every minute or so. It's like it stutters. I disconnected from the wireless network and the audio is fine.
Anyone else have this problem, or possible solutions. Called up customer service and they told me that I need to buy Wireless Media Bridge. After telling them that I wasn't trying to install any programs, but rather listen to music on Windows Media Player, they told me again, that I need to buy WMB.

Answer 1

HI...
As the audio is chopping try making the following changes on your router.
On the computer connected to the router open Internet Explorer. In the address bar type http://192.168.1.1 (Default IP).
Leave the username field blank and in the password type "admin" (If you have not changed the router password).
When the configuration page is fully loaded, click on the tab that says Wireless.Set the mode as mixed, change the wireless network name SSID, also set the channel to 11. Save setting.
When the wireless page is fully displayed, clickon the sub-tab that says wireless security.select the security mode as WPA2 Personal and Encryption as AES. Enter a security key. Save settings
Click on  the sub tab that says advanced wireless settings.
Set the value of Beacon interval = 50, Fragmentation Threshold = 2306 and RTS Threshold= 2307. Save settings.
Connect from the wireless computers to  the new wireless network connected, enter the correct security key and you should get connected.
Make sure that all the firewalls on the wireless computers are disabled.