Sim editing audio sync problem *only with editor*

Hi folks,
I'm having some problems with the 'song editor' function in stepmania, and was hoping someone here could help me with it.
My problem is that, as I edit a simfile for a song I'm working on, listening to a song with 'from current beat' or 'from start of selection', including ctrl+r for recording (which I'm not using btw, don't worry) plays the music, but plays it considerably off-beat.
The song I've been working on matches up fine if I play it from the start in the editor, or play it outside the editor, but having to listen to the entire song every time I want to test a few new steps is making it take an excruciatingly long time to edit a song.

Thanks massively in advance to anyone who can help me!

Here's my simfile header, in case the error could be in here. I copied this and edited it from another simfile:


#TITLE:Holy Orders 3 - Be just or be dead;
#SUBTITLE:;
#ARTISTaisuke Ishiwatari;
#TITLETRANSLIT:;
#SUBTITLETRANSLIT:;
#ARTISTTRANSLIT:;
#GENRE:;
#CREDIT:;
#BANNER:Holy Orders 3.png;
#BACKGROUND:Holy Orders 3.png;
#LYRICSPATH:;
#CDTITLE:cdtitle.png;
#MUSIC:Holy Orders 3.mp3;
#OFFSET:-0.750000;
#SAMPLESTART:77.075996;
#SAMPLELENGTH:25.945000;
#SELECTABLE:YES;
#BPMS:0.000000=120.000000
;
#STOPS:
;
#BGCHANGES:;
#KEYSOUNDS:;
#ATTACKS:;

//---------------dance-single - ----------------
#NOTES:
dance-single:
:
Medium:
1:
0.040283,0.077826,0.026318,0.033837,0.001880,60.000000,7.000000,9.000000,0.000000,1.000000,1.000000,0.040283,0.077826,0.026318,0.033837,0.001880,60.000000,7.000000,9.000000,0.000000,1.000000,1.000000:
// measure 0
0000
0000
0000
0000
, // measure 1
0000
0000
0000
0000

This is a problem when you're using an MP3 with VBR (variable bit rate). If you have the original, make sure to reexport it as a CBR (constant bit rate) MP3, an OGG, or if necessary reencode the file you're using in the game as such.

Ooh, thanks for that.

I have the same problem as well, and I thought that it happens with all MP3s, so I stopped using them altogether in my simfiles. It's nice to know exactly why it happens.

Thanks so much for that!

Weird though - the mp3 I'm dealing with is CBR... :/

Still, converting it to an .ogg worked brilliantly.