OGSM English Instrument Variation Addon

Description
This small mod is an unofficial addon for the English translated OGSM (Old Good STALKER Mod) for STALKER: Clear Sky. All credit for the original content goes to the authors of this fantastic mod, the OGSM Team, and to Remco for his English translation. Many thanks to all of you!

In OGSM, the ability to purchase and "play" guitars and harmonicas was implemented. Activating the item would play a single sound file for each instrument. The Instrument Variation Addon (IVA) adds 6 new sound files for the guitar, and 3 for the harmonica, picked randomly when the item is used.