.S3M/.S3I - ScreamTracker v3 modules / instruments

The .S3I files are usually named .SMP but they will be saved as .S3I in order to avoid confusion with Samplevision files.

Features:

• 8 / 16-bits, mono / stereo, loop, name, note, collection.

Supported by:

• Awave Studio (S3I: read + write, S3M: read only).