james_b My Pi (Model B) is connected to a USB HD (ext4) and I add tracks to the HD / library via FTP using a USB WiFi device. When uploading there is an unacceptable amount of jitter (or general glitches/ pops / clicks / stuttering etc), is this because the HD and the USB wifi share the same USB bus? (they're connected to separate ports). Is there a solution for this or is this just the nature of the Pi's USB configuration? Thanks.
ACX Hi james_b, the USB limitations of the Rpi model B are well known and are almost surely the culprit of your problem. There isn't much you can do for it... except of course buying a NAS