Sound Server error in KDE

Hello all, new Arch user here.  I've just installed kde and when launching KDE I receive the following error:
Error while initializing the sound driver:
device /dev/dsp can't be opened (Permission denied)
The sound server will continue, using the null output device.
I have tried to chmod 755 /dev/dsp as root  but the next time I log on to KDE, I receive the same error.  Any ideas?
Thx!!

The Wiki is usually helpful for things like this.  If you enter 'audio' in the Find field and press the Search button, the article is listed.

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    Apr 15 13:04:53 estmacsvr01.local xcsbuildd[70827] <Error>: [XCSCredentialOperation.m:111 7db26310 +0ms] Failed to get credential with error Error Domain=XCSCredentialErrorDomain Code=-1 "HTTP credential request failed, got HTTP status 400 with headers { "Accept-Ranges" = bytes; "Content-Length" = 0; Date = "Tue, 15 Apr 2014 07:34:52 GMT"; "X-Apple-Credential-error" = itemNotFound; }" UserInfo=0x7f91e4122ae0 {NSLocalizedDescription=HTTP credential request failed, got HTTP status 400 with headers { "Accept-Ranges" = bytes; "Content-Length" = 0; Date = "Tue, 15 Apr 2014 07:34:52 GMT"; "X-Apple-Credential-error" = itemNotFound; }}
    Any help is greatly appreciated!

    Did anyone find a way around this? I have the exact same error and tried the exact same solution.
    The Xcode 5 release notes described a problem that sounds similar.
    Communicating with a remote SVN repository over HTTPS can fail with an error similar to “Error validating server certificate for server name.” Edit the file /Library/Server/Xcode/Config/xcsbuildd.plist and change the TrustSelfSignedSSLCertificates key from false to true. Then, from a Terminal window, run: sudo killall xcsbuildd. 14639890
    https://developer.apple.com/library/ios/releasenotes/DeveloperTools/RN-Xcode/Cha pters/xc5_release_notes.html
    I haven't found a similar fix for Xcode 6 though.

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