Here is a little known Chinese player. It has been converted to English by members of XDA...I believe the below is the latest English version. For me, shorter xvids like tv shows work pretty well, but longer movie type files (1GB +) can crash the program...So YMMV...But hey, it's free!
Wuzhenhua_Player_4.1_EN.apk
Claims to play the following, but I've only tried xvid...
4xm,8bps,aac,ac3,eac3,amv,ape,dca,imc,alas,rm,rmvb ,nuv,ptx,tta,wma,wmv,flic,
flac,flv,g726,h261,h263,h264,mp1,mp2,mp3,mp4,smc,t mv,dvdsub,dvbsub, divx, xvid