About the scrollbar I don't know.
About the soundwave, maybe you can use ShellExecute. This is a windows function that runs a file with the default application for its extension.
First you need to declare the function:
Then, you can invoke it from your click event:
Public Declare Function ShellExecute Lib "shell32.dll" Alias _
"ShellExecuteA" (ByVal hWnd As Long, ByVal lpOperation As String, _
ByVal lpFile As String, ByVal lpParameters As String, _
ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
Both sFile and sFilePath are variables you'll need to initialize with you file and its path.
Call ShellExecute(0, vbNullString, sFile, vbNullString, sFilePath, 1)