I doubt that Monster cables would make a difference over a short distance except for extremely loud music.
Monster cables make no difference over short or long distance with soft and loud music. If you bought an expensive power cord for your computer, it wouldn't run faster either.
To my ears, there is an enormous difference between horrible compression such as satellite radio and CD, and there is a difference between a live broadcast and a recording.
Of course. There's also a difference between the sound that comes out of your phone and the sound that comes out of your CD player. There's a difference between equipment you can buy at the dollar store and more expensive equipment.
There is no meaningful difference as far as human perception goes between good equipment and very expensive equipment. There's no meaningful difference between a raw picture and a good quality JPEG. There's no meaningful difference between a good quality MP3 and a FLAC file.
Things aren't better because they are overpriced. Now if only the management at the company I work for could understand that, I wouldn't work with crappy software that costs hundreds of thousands of dollars.