question: public long skip ( long n ) throws IOException { if ( ( n % frameSize ) != 0 ) { n -= ( n % frameSize ) ; } if ( frameLength != AudioSystem . NOT_SPECIFIED ) { if ( ( n / frameSize ) > ( frameLength - framePos ) ) { n = ( frameLength - framePos ) * frameSize ; } } long temp = stream . skip ( n ) ; if ( temp % frameSize != 0 ) { throw new IOException ( "Could not skip an integer number of frames." ) ; } if ( temp >= 0 ) { framePos += temp / frameSize ; } return temp ; }
target:  Skips over and discards a specified number of bytes from this audio input stream.