about some command line questions

[xzheng]

hi,everyone,
How are you doing. I run VLS and connect with telnet localhost 9999.then use admin and password . I can use "start test.mpeg localhost local1" to stream . But under the command line of telnet, I don't start again and told the channnel is busy, so I stop localhost. but nothing do it. There is nothing but exit the VLS and telnet and try it.
Pls tell me that why . I want to start one stream and then start another stream . But I don't do it. Thank you very much.

Best regards