Test if sample was pre-loaded
sample_loaded?  path (string)
Given a path to a .wav, .wave, .aif, .aiff, .ogg, .oga or .flac file, returns true if the sample has already been loaded.
Introduced in v2.2
Example
 
  | # Example 1 | 
  | 
load_sample :elec_blip
puts sample_loaded? :elec_blip
puts sample_loaded? :misc_burp
 | 
# :elec_blip is now loaded and ready to play as a sample
# prints true because it has been pre-loaded
# prints false because it has not been loaded
 |