To use PureVoice Player/Recorder both you and the other person 
must have PureVoice installed.  

Below is the list of hotkeys for Pure Voice.
But basically all you have to do is run the 
Pure Voice program, press the space bar, record
your message, then press the space bar to stop 
recording.
Then press control A and fill in the email address
and send your message with the pure voice
recording.

Shortcut Keys
The following keyboard shortcuts can be used.

Always Stay On Top Ctrl+T
Attach Ctrl+A
Attach Site Info Ctrl+D
Compact View Ctrl+V
Close Alt+F4
Edit Name Ctrl+E
Exit Ctrl+Q
Insert Mode Insert
Microphone Vol Up }
Microphone Vol Down {
New Recording Ctrl+N
Open. Ctrl+O
Pause F8
Play F5
Record F6
Save As. Ctrl+S
Skip Backward <
Skip Forward >
Slow Down -
Speaker Vol Up ]
Speaker Vol Down [
Speed Up +
Stop F7
Volume Controls Ctrl+G