This is truly an audiophile trait. Do you leave concerts after hearing your favorite song? For most audiopiles the system's sound is the thing of value and we constantly song serf to find things that lock in. Discophiles on the other hand - at least the ones I know - tend to get swept away with the music and play through the whole side.
Regarding your other query, it seems that the error correction circuitry in a CD player can really soak up a lot of juice both in correcting the physical position of the laser assembly and interpolating missing information. This can theoretically load down the power supply and effect the sonics of the player. Arguments are raised that many CD treatments minimize these Phenomena. But who really cares, you'll just be throwing in another CD in a minute anyway and maybe it'll be less scratched.
Regarding your other query, it seems that the error correction circuitry in a CD player can really soak up a lot of juice both in correcting the physical position of the laser assembly and interpolating missing information. This can theoretically load down the power supply and effect the sonics of the player. Arguments are raised that many CD treatments minimize these Phenomena. But who really cares, you'll just be throwing in another CD in a minute anyway and maybe it'll be less scratched.