This has happened to me when changing tracks on my Cairn CDP via the remote. The infrared code for track advance is the same code used for volume up on my Heed integrated. I've been told that quite a few high end manufacturers use similar sets of Phillips I/R codes which may be responsible for this type of havoc. I've eliminated the problem by using an RF capable remote and receiver. Try picking up an MX series URC brand remote and MRF base station... should do the trick.
