Stereo5,
Sure, when I had the laptop and USB HDD holding the music I never had issues either. It never skipped nor any other issue. The problem is USB stands for universal serial bus, so all processes run in series. With data transfer, where time is not critical, it doesn't matter. But when you are streaming music (a real-time process) and in series exchanging data (the music files), it does have an impact even though the manifestation is not skipping or apparent "problems". You only realize there was something when you take it out.
This is not something to go crazy about, though. As mentioned, I had this setup and was perfectly happy. And of course there aren't many ways around music storage with a laptop. But if you can avoid it, it is better.
Sure, when I had the laptop and USB HDD holding the music I never had issues either. It never skipped nor any other issue. The problem is USB stands for universal serial bus, so all processes run in series. With data transfer, where time is not critical, it doesn't matter. But when you are streaming music (a real-time process) and in series exchanging data (the music files), it does have an impact even though the manifestation is not skipping or apparent "problems". You only realize there was something when you take it out.
This is not something to go crazy about, though. As mentioned, I had this setup and was perfectly happy. And of course there aren't many ways around music storage with a laptop. But if you can avoid it, it is better.