I've been using MameWah as my arcade menu system since day one and find it has been very robust and reliable

I have however noticed a small issue with music playback when browsing the menu. It's all set up correctly, I put my MP3s in the Music directory etc and it finds and plays them... but sometimes MameWah will skip to the next track prematurely, before the track has ended. Usually the 'Alt' key needs to be pressed to skip to the next track, but I'm getting this problem without any input at all.
It happens at random times during the track too, some very soon, and some halfway etc. It's not a problem with the MP3s themselves, because MameWah usually plays them all the way through.
I understand this issue I'm having is very sporadic

Has anyone else experienced this issue, is there a known fix?
Edit: I'm running P4 1.6GHz, 512MB RAM, WinXP SP2 (hidden), Mamewah 1.6+ (as shell), Audigy 2 ZS Plat. Pro soundcard.