Updated to Hoster 4.06 and no video

[kickstar]

OK - Since it didn't work Friday and I had a show, I had to do a system restore - thank goodness it worked! Now, to answer the following:
1. OS - Windows XP Media Center Edition Version 2002 Service Pack 3 on an eMachines N10 Mobile AMD Sempron Processor 3200+, 1.6 GHz
2. Video card - NVIDIA GeForce Go 6100 - 1st display is 1200 x 800, 16 bit, 2nd display is 1024 X 768, 16 bit.
3. WIndows update status - Updated all the XP Optional Downloads (IE7, WMP 11, and associated updates - there were no Critical updates and now there are no Optional downloads left. DID NOT DOWNLOAD ANY OPTIONAL HARDWARE UPDATES. I use directX 9.0c.
4. Memory - 1.43 GB Ram

This is the original Laptop that I installed Hoster 3312 initially - then upgraded to Hoster 3316, then 3321. Have been using 3321 for my shows for 2 years with no problems. Decided to upgrade to the 4.06 after receiving email about it. I use a Western Digital 500 GB external HD for my KMA storage of approximately 9000 songs and a WD 320 GB HD as a backup of the KMA's.
I've used dual display with a singer's monitor - have just had to re-do the "display properties", "Settings", "2nd display", "extend my Windows desktop onto this monitor" & "Apply" every time I used Hoster (which is no big deal to me).
After downloading all the updates and changing the settings for XP (yes, I did each update 1-at-a-time and restarted after each download/installation), I reloaded the Hoster 4.06 and... Bob Seger sings in my ear "still the same, baby baby still the same..." - it still only plays audio, with marquee and singer's names but no lyrics...
Is it possible I have to choose every format on Windows Media Player 11 as the default program to play every file format??? If not, which do I choose?
And if that's not enough, I bought a Toshiba Laptop with 4 GB Ram, 250 GB HD, VISTA and tried to load Hoster from my original downloaded 3312 file (placed on a jump drive) but the Vista won't read it - I went to the 3321 file and it started to install. When it sent info to MTU, it says I've already got it installed on 2 computers (but I don't...), soooo I tried installing 4.06 but it won't install as I don't have a previous version of Hoster installed on the new laptop (I paid for the upgrade).
Not sure of the next step, now...
Thanks in advance for the help.