RMVB problem-o

Hi There,

So I am new and stuff but here is my problem.

I watched Dragonball on my ps3 through Tversity and they were .RMVB files but they worked perfectly. Now I wanted to watch Dragonball Z and yes also they were .RMVB files it worked fine untill episode 8. From episode 8 and further he skips the last minute! ex: "the episode is 20:00 long but it will pause at 19:00 or 18:55".

so how can I fix this?

Thank You,

Da Newguy