It's only got 16mb of memory total, so there's no real way to delay it. The practical thing to do is to transcode all your flac's to mp3's using a good encoder such as lame, and keep the flacs for home listening and use the mp3's on the empeg.

The only other way I know of to influence to cache behavior is the "reserve cache" config.ini directive. It's use is to reserve some of the memory for other applications, but it has the side effect of reducing the amount of cacheing being done in any one go around, so it may help.

You are running Hijack, right? It has some fixes for the players with extra memory which might help with the glitching.

Matthew