Improve sound handling and show title in volume mixer - #4447

'Settings.ProgramSuffixes' is obsolete: 'Should use GetSuffixes() instead.'

The variable 'e' is declared but never used

'ServicePointManager' is obsolete: 'WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.' (https://aka.ms/dotnet-warnings/SYSLIB0014)

'ServicePointManager' is obsolete: 'WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.' (https://aka.ms/dotnet-warnings/SYSLIB0014)

Method, type or constant "DeviceNotifyCallbackRoutine" not found

'Settings.ProgramSuffixes' is obsolete: 'Should use GetSuffixes() instead.'

'Settings.ProgramSuffixes' is obsolete: 'Should use GetSuffixes() instead.'

'Settings.ProgramSuffixes' is obsolete: 'Should use GetSuffixes() instead.'

The 'ref' modifier for argument 2 corresponding to 'in' parameter is equivalent to 'in'. Consider using 'in' instead.

The 'ref' modifier for argument 2 corresponding to 'in' parameter is equivalent to 'in'. Consider using 'in' instead.