External hard drives and sound quality


I've just about filled up the internal hard drive on my Macbook with music files and am now looking at external hard drive options. Was wondering whether folks report any difference in sound quality when playing files from an external drive versus the internal?

I'm especially interested in hearing people's experiences using wireless hard drives. An Apple rep told me it would be no problem, as the hard drive wouldn't directly interface with the USB output, but I of course always like to be skeptical of anything an Apple rep says.
coverto
i have some recent experience with this topic and some odd observations. i began, as you, ripping and storing on my laptop and about 6 weeks ago had filled it. this led to the process of evaluating external storage...nas, usb hd etc and i finally decided an a seagate blackarmor nas 110. i transfered all my music from the laptop on to the nas and to my big surprise, i had a noticeable improvement. things were airy and open where as i had a muddy, loose sound with my laptop (this negative change in sonics occurred as it got closer to full, was not always like this). very strange but very real. my guess is this had to do with overload on the processor in my laptop as there were more than a few quirks with the drive full. i realize many will say i am crazy but that is what happened. i am finding more and more that everything matters in computer audio. stuff we used to think did not actually does. i have a feeling we will all learn allot as this format begins to mature.

good luck with your transition...
You ask a question that only you can answer. The only way you can tell is to try it and see if you hear a difference. These types of questions always get 2 types of responses which has already occurred.

1. bits are bits, how could it possibly matter?

2. Everything matters. I tried it and heard a difference.

Go to the audioasylum.com PC audio forum and you can find a lot of discussion about this. People propose that solid state drives sound better, lower rpm drives sound better, if you have a usb dac then a firewire drive sounds better and vice versa, different usb ports sound different, etc.

.
Two different computer configurations can and may well sound different but guaranteed it is other factors in either the ripping process to disk or the D to A conversion process at play and not the location of the hard drive. I'll stand by that assertion!
Thanks folks - some very helpful comments all around. Sounds like the consensus is that even a wireless external drive shouldn't compromise sound quality provided the network is fast enough. I've seen a couple of comments to the contrary elsewhere, but I think I will go ahead and give it a try - for my Macbook, probably an Aiport Extreme coupled with a Western Digital of some kind. Will let you know how it goes, and thanks a bunch!