nikolai@nikolai-desktop:~/Desktop/slideshowtest/soundsplicing$ ./crossfade_cat.sh Sonic.wav Truck.wav auto auto
crossfade and concatenate files

Finding length of Truck.wav...
Length is     138.579592 seconds
(standard_in) 1: illegal character: S
(standard_in) 1: syntax error
Obtaining Sonic.wav seconds of fade out portion from Truck.wav...
sox trim: usage: start [length]
(standard_in) 1: syntax error
./crossfade_cat.sh: line 86: [: ==: unary operator expected
Auto mode will fadeout
sox formats: can't open input file `fadeout1.wav': No such file or directory
Obtaining Sonic.wav seconds of fade in portion from auto...
sox formats: can't open input file `auto': No such file or directory
(standard_in) 1: syntax error
./crossfade_cat.sh: line 104: [: ==: unary operator expected
Auto mode will fadein
sox formats: can't open input file `fadein1.wav': No such file or directory
Crossfading...
sox formats: can't open input file `fadein2.wav': No such file or directory
Trimming off crossfade sections from original files...
sox formats: can't open input file `auto': No such file or directory
sox formats: can't open input file `song2.wav': No such file or directory
Removing temporary files...

rm: cannot remove `fadeout1.wav': No such file or directory
rm: cannot remove `fadeout2.wav': No such file or directory
rm: cannot remove `fadein1.wav': No such file or directory
rm: cannot remove `fadein2.wav': No such file or directory
rm: cannot remove `crossfade.wav': No such file or directory
rm: cannot remove `song2.wav': No such file or directory
(standard_in) 1: syntax error
(standard_in) 1: syntax error
The crossfade in mix.wav occurs at around  mins  secs