Not possible, Isobuster will NOT convert an AVI to anything. Do you mean an ISO, BIN or DAT file ?
it has no sound or it will just play one episode.
Did you let DLP convert the VCD's 44.1khz audio to 48khz ? If not then thats probably your problem. If they are NTSC VCD's, then the MP2 audio in the VCD is not a standard for NTSC players, you really need to convert it to AC3 first.
it said it is an mpeg 1 file and it should be mpeg 2 when i used the dvdlabpro.
DVDLab is an authoring program, not an encoder. It authors what you load into it. A VCD is MPEG1. However, the video specs (not the audio specs) of a VCD are DVD Compliant and should play on all dvd players. 90% of the time, its the audio that stop it from playing.